// musicLibrary.js — 160 procedural song definitions for the MusicEngine
// Loaded by HTML5 games via <script> tag; provides window.MusicLibrary

(function() {
  'use strict';

  // ─── Song Definitions ──────────────────────────────────────
  //
  // Each song: { id, name, mood, energy, tempo, key, scale, tags, desc,
  //   synths: { lead, pad, bass },
  //   fx: { reverb, delay, filter },
  //   sections: { name: [bars, chords, melody, bass, drums, intensity] },
  //   form: [section order] }

  var songs = [

  // ═══════════════════════════════════════════
  // EPIC (20 songs) — epic_001 to epic_020
  // ═══════════════════════════════════════════

  {
    id: 'epic_001',
    name: 'Siege of Thunder',
    mood: 'Epic',
    energy: 9,
    tempo: 150,
    key: 'C',
    scale: 'minor',
    tags: ['action', 'siege', 'storm'],
    desc: 'Thunderous orchestral assault with relentless percussion and soaring brass lines',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.2, filter: 3500 },
    sections: {
      intro:   [4, 'i VI III VII',  'arp-up',    'root',       'build',     0.3],
      verse:   [8, 'i iv VII III',  'stepwise',  'root-fifth', 'standard',  0.6],
      chorus:  [8, 'VI VII i V',    'leap',      'driving',    'full',      0.9],
      bridge:  [4, 'i v VI iv',     'sustained', 'walking',    'half-time', 0.5],
      outro:   [4, 'VI VII i',      'fade',      'root',       'sparse',    0.2],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_002',
    name: "Dragon's Wrath",
    mood: 'Epic',
    energy: 10,
    tempo: 160,
    key: 'D',
    scale: 'harmonicMinor',
    tags: ['dragon', 'boss-fight', 'powerful'],
    desc: 'Ferocious harmonic minor shred with explosive drum fills and scorching lead',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.15, filter: 4000 },
    sections: {
      intro:   [4, 'i VII iv v',    'fanfare',   'octave',     'build',     0.4],
      verse:   [8, 'i v iv VII',    'rhythmic',  'driving',    'standard',  0.7],
      chorus:  [8, 'i III VII iv',  'leap',      'octave',     'full',      1.0],
      bridge:  [4, 'iv i V VII',    'trill',     'walking',    'half-time', 0.6],
      outro:   [4, 'i VII i',       'sustained', 'root',       'sparse',    0.3],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_003',
    name: "Kingdom's Fall",
    mood: 'Epic',
    energy: 8,
    tempo: 135,
    key: 'E',
    scale: 'dorian',
    tags: ['kingdom', 'dramatic', 'war'],
    desc: 'Brooding dorian march that builds from sorrowful strings to a devastating climax',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.25, filter: 3000 },
    sections: {
      intro:   [4, 'i VII VI V',    'sustained', 'pedal',      'sparse',    0.2],
      verse:   [8, 'i III iv VII',   'stepwise',  'root-fifth', 'march',     0.5],
      chorus:  [8, 'VI iv i V',     'leap',      'driving',    'full',      0.85],
      bridge:  [4, 'i iv VI VII',   'descending','walking',    'half-time', 0.5],
      outro:   [4, 'i VII i',       'fade',      'root',       'sparse',    0.15],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_004',
    name: 'Titan Ascendant',
    mood: 'Epic',
    energy: 9,
    tempo: 145,
    key: 'F',
    scale: 'minor',
    tags: ['titan', 'heroic', 'climax'],
    desc: 'Ascending power theme with massive layered synths and triumphant resolution',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.2, filter: 3800 },
    sections: {
      intro:   [4, 'i v VII VI',    'ascending', 'root',       'build',     0.35],
      verse:   [8, 'i VII III v',   'arp-up',    'root-fifth', 'standard',  0.6],
      chorus:  [8, 'VI VII iv i',   'fanfare',   'driving',    'full',      0.95],
      bridge:  [4, 'i iv i v',      'sustained', 'pedal',      'half-time', 0.5],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus'],
  },

  {
    id: 'epic_005',
    name: 'Forge of Legends',
    mood: 'Epic',
    energy: 8,
    tempo: 130,
    key: 'G',
    scale: 'melodicMinor',
    tags: ['forge', 'battle', 'powerful'],
    desc: 'Heavy melodic minor groove with hammering rhythms and a blazing lead melody',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.15, filter: 3200 },
    sections: {
      intro:   [4, 'i iv v i',     'ostinato',  'pumping',    'kick-only', 0.3],
      verse:   [8, 'i VI iv VII',   'stepwise',  'driving',    'standard',  0.65],
      chorus:  [8, 'i III VII VI',  'leap',      'octave',     'full',      0.9],
      break1:  [4, 'i v iv VII',    'trill',     'syncopated', 'breakbeat', 0.7],
      outro:   [4, 'i VII i',       'fade',      'root',       'sparse',    0.2],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'epic_006',
    name: 'Storm Legion',
    mood: 'Epic',
    energy: 9,
    tempo: 155,
    key: 'A',
    scale: 'harmonicMinor',
    tags: ['storm', 'legion', 'fierce'],
    desc: 'Rapid harmonic minor fury with militant snare rolls and piercing lead runs',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.1, filter: 4500 },
    sections: {
      intro:   [4, 'i VII i VII',   'fanfare',   'root',       'march',     0.4],
      verse:   [8, 'i iv i VII',    'rhythmic',  'driving',    'double-time',0.7],
      chorus:  [8, 'i v VII IV',    'arp-up',    'octave',     'full',      0.95],
      bridge:  [4, 'iv v i VII',    'ascending', 'walking',    'half-time', 0.55],
      outro:   [4, 'i VII i',       'sustained', 'root',       'march',     0.3],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_007',
    name: 'Conquest of Dawn',
    mood: 'Epic',
    energy: 8,
    tempo: 140,
    key: 'B',
    scale: 'minor',
    tags: ['conquest', 'heroic', 'victory'],
    desc: 'Majestic dawn-rise theme with layered pads building to a grand fanfare',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.45, delay: 0.3, filter: 2800 },
    sections: {
      intro:   [4, 'VI i VII III',  'sustained', 'pedal',      'sparse',    0.2],
      verse:   [8, 'i VII iv v',    'pentatonic','root-fifth', 'standard',  0.55],
      chorus:  [8, 'i v iv VII',    'fanfare',   'driving',    'full',      0.9],
      outro:   [4, 'VI VII i',      'fade',      'root',       'sparse',    0.15],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'epic_008',
    name: 'Blood of the Arena',
    mood: 'Epic',
    energy: 10,
    tempo: 165,
    key: 'C#',
    scale: 'phrygian',
    tags: ['battle', 'fierce', 'combat'],
    desc: 'Phrygian gladiator anthem with thundering kicks and savage melodic hooks',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.1, filter: 5000 },
    sections: {
      intro:   [4, 'i VII VI VII',  'ostinato',  'pumping',    'tribal',    0.5],
      verse:   [8, 'i v i iv',      'chromatic', 'driving',    'standard',  0.75],
      chorus:  [8, 'i III VII i',   'leap',      'octave',     'full',      1.0],
      bridge:  [4, 'i iv VII i',    'trill',     'syncopated', 'breakbeat', 0.65],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'epic_009',
    name: 'Throne Eternal',
    mood: 'Epic',
    energy: 7,
    tempo: 125,
    key: 'D#',
    scale: 'dorian',
    tags: ['throne', 'dramatic', 'kingdom'],
    desc: 'Stately dorian processional with regal brass swells and ceremonial percussion',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.25, filter: 2500 },
    sections: {
      intro:   [4, 'i iv VI VII',   'sustained', 'root',       'march',     0.25],
      verse:   [8, 'i VII VI V',    'stepwise',  'walking',    'standard',  0.5],
      chorus:  [8, 'VI VII i V',    'arp-up',    'root-fifth', 'full',      0.8],
      bridge:  [4, 'iv i V VII',    'descending','pedal',      'half-time', 0.45],
      outro:   [4, 'VI VII i',      'fade',      'root',       'sparse',    0.2],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_010',
    name: 'Wings of Valkyrie',
    mood: 'Epic',
    energy: 9,
    tempo: 152,
    key: 'F#',
    scale: 'harmonicMinor',
    tags: ['heroic', 'action', 'victory'],
    desc: 'Soaring harmonic minor flight with rapid arpeggios and a euphoric peak',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.2, filter: 4200 },
    sections: {
      intro:   [4, 'i III iv VII',   'arp-up',    'root',       'build',     0.35],
      verse:   [8, 'i iv VII III',   'arp-bounce','driving',    'standard',  0.65],
      chorus:  [8, 'i v VII VI',     'leap',      'octave',     'full',      0.95],
      bridge:  [4, 'i VII iv v',     'ascending', 'walking',    'tribal',    0.55],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus'],
  },

  {
    id: 'epic_011',
    name: 'The Iron March',
    mood: 'Epic',
    energy: 8,
    tempo: 132,
    key: 'G#',
    scale: 'minor',
    tags: ['war', 'legion', 'march'],
    desc: 'Crushing military march with iron-clad percussion and a resolute melodic theme',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.15, filter: 3500 },
    sections: {
      intro:   [4, 'i v i VII',     'rhythmic',  'pumping',    'march',     0.4],
      verse:   [8, 'i VI VII III',   'stepwise',  'root-fifth', 'march',     0.6],
      chorus:  [8, 'III VII i iv',   'fanfare',   'driving',    'full',      0.85],
      bridge:  [4, 'i iv v iv',      'ostinato',  'syncopated', 'half-time', 0.5],
      outro:   [4, 'i VII i',        'sustained', 'root',       'march',     0.3],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_012',
    name: 'Celestial Siege',
    mood: 'Epic',
    energy: 9,
    tempo: 148,
    key: 'A#',
    scale: 'melodicMinor',
    tags: ['siege', 'climax', 'powerful'],
    desc: 'Heavenly melodic minor ascent colliding with earth-shaking low end and choir-like pads',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.2, filter: 3600 },
    sections: {
      intro:   [4, 'i v VI iv',     'ascending', 'pedal',      'build',     0.3],
      verse:   [8, 'i iv i v',      'pentatonic','root-fifth', 'standard',  0.55],
      chorus:  [8, 'i VII III v',   'leap',      'octave',     'full',      0.9],
      bridge:  [4, 'VI i VII III',  'arp-down',  'walking',    'half-time', 0.5],
      outro:   [4, 'i VII i',       'fade',      'root',       'sparse',    0.2],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_013',
    name: 'Oathbreaker',
    mood: 'Epic',
    energy: 10,
    tempo: 170,
    key: 'E',
    scale: 'harmonicMinor',
    tags: ['boss-fight', 'aggressive', 'dramatic'],
    desc: 'Blistering boss battle anthem with relentless double-kicks and a searing harmonic minor riff',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.1, filter: 4800 },
    sections: {
      intro:   [4, 'i VII i iv',    'trill',     'pumping',    'double-time',0.5],
      verse:   [8, 'i v iv i',      'chromatic',  'driving',   'double-time',0.8],
      chorus:  [8, 'i VI VII i',    'leap',       'octave',    'full',      1.0],
      break1:  [4, 'i iv VII i',    'ostinato',   'syncopated','breakbeat', 0.7],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'epic_014',
    name: 'Pillars of Eternity',
    mood: 'Epic',
    energy: 7,
    tempo: 120,
    key: 'F',
    scale: 'dorian',
    tags: ['dramatic', 'kingdom', 'throne'],
    desc: 'Grand dorian hymn with towering pad layers and a slow-building, inevitable crescendo',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.3, filter: 2200 },
    sections: {
      intro:   [4, 'i iv VI VII',   'sustained', 'pedal',      'sparse',    0.15],
      verse:   [8, 'v i iv VII',    'legato',    'root',       'standard',  0.45],
      chorus:  [8, 'i VII iv v',    'arp-up',    'root-fifth', 'full',      0.8],
      bridge:  [4, 'i III VII i',   'descending','walking',    'half-time', 0.4],
      outro:   [8, 'i iv VII i',    'fade',      'pedal',      'sparse',    0.15],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_015',
    name: 'The Last Bastion',
    mood: 'Epic',
    energy: 9,
    tempo: 142,
    key: 'A',
    scale: 'minor',
    tags: ['siege', 'heroic', 'battle'],
    desc: 'Desperate last-stand theme with urgent strings and a defiant, rising chorus',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.2, filter: 3800 },
    sections: {
      intro:   [4, 'i VI iv VII',   'arp-down',  'root',       'build',     0.35],
      verse:   [8, 'i iv i VII',    'call-response','root-fifth','standard', 0.6],
      chorus:  [8, 'i v VII VI',    'fanfare',   'driving',    'full',      0.9],
      bridge:  [4, 'iv v i VII',    'ascending', 'octave',     'tribal',    0.6],
      outro:   [4, 'i VII i',       'sustained', 'root',       'sparse',    0.2],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_016',
    name: 'Warcry of the North',
    mood: 'Epic',
    energy: 10,
    tempo: 158,
    key: 'B',
    scale: 'harmonicMinor',
    tags: ['war', 'fierce', 'conquest'],
    desc: 'Nordic war chant with thunderous toms, harsh harmonic minor runs, and tribal energy',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.1, filter: 4500 },
    sections: {
      intro:   [4, 'i v i iv',      'ostinato',  'pumping',    'tribal',    0.5],
      verse:   [8, 'i VII i VII',   'rhythmic',  'driving',    'tribal',    0.75],
      chorus:  [8, 'i iv v i',      'leap',      'octave',     'full',      1.0],
      bridge:  [4, 'i VII iv v',    'trill',     'syncopated', 'double-time',0.7],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'epic_017',
    name: 'Shattered Crown',
    mood: 'Epic',
    energy: 8,
    tempo: 138,
    key: 'C#',
    scale: 'dorian',
    tags: ['dramatic', 'throne', 'powerful'],
    desc: 'Regal dorian tragedy with broken chord progressions that rebuild into glory',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.25, filter: 3000 },
    sections: {
      intro:   [4, 'i VII VI V',    'descending','pedal',      'sparse',    0.2],
      verse:   [8, 'i iv VII III',  'stepwise',  'root-fifth', 'standard',  0.55],
      chorus:  [8, 'i v iv VII',    'arp-up',    'driving',    'full',      0.85],
      bridge:  [4, 'VI VII iv i',   'sustained', 'walking',    'half-time', 0.45],
      outro:   [4, 'i VII i',       'fade',      'root',       'sparse',    0.15],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_018',
    name: 'Dragonfire Overture',
    mood: 'Epic',
    energy: 9,
    tempo: 162,
    key: 'D',
    scale: 'melodicMinor',
    tags: ['dragon', 'action', 'climax'],
    desc: 'Scorching melodic minor overture with blazing fast arpeggios and massive drops',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.15, filter: 4200 },
    sections: {
      intro:   [4, 'i III VII iv',  'arp-up',    'root',       'build',     0.4],
      verse:   [8, 'i VII i iv',    'arp-bounce','driving',    'standard',  0.7],
      chorus:  [8, 'i v VII VI',    'fanfare',   'octave',     'full',      0.95],
      break1:  [4, 'i iv v iv',     'chromatic', 'syncopated', 'breakbeat', 0.65],
      outro:   [4, 'i VII i',       'sustained', 'root',       'sparse',    0.25],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'epic_019',
    name: 'Echoes of Valhalla',
    mood: 'Epic',
    energy: 8,
    tempo: 128,
    key: 'G',
    scale: 'minor',
    tags: ['victory', 'heroic', 'legend'],
    desc: 'Heroic afterglow theme with echoing delays, reverent pads, and a noble melody',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.3, filter: 2600 },
    sections: {
      intro:   [4, 'i iv VI VII',   'sustained', 'pedal',      'sparse',    0.2],
      verse:   [8, 'i III iv VII',  'pentatonic','root',       'half-time', 0.5],
      chorus:  [8, 'VI i VII III',  'leap',      'root-fifth', 'full',      0.85],
      bridge:  [4, 'i iv v i',      'arp-down',  'walking',    'standard',  0.55],
      outro:   [8, 'VI VII i',      'fade',      'pedal',      'sparse',    0.1],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'epic_020',
    name: 'Apex Predator',
    mood: 'Epic',
    energy: 10,
    tempo: 168,
    key: 'D#',
    scale: 'phrygian',
    tags: ['boss-fight', 'titan', 'aggressive'],
    desc: 'Phrygian apex boss theme with crushing low end, frantic leads, and zero mercy',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.15, delay: 0.1, filter: 5000 },
    sections: {
      intro:   [4, 'i VII VI VII',  'ostinato',  'pumping',    'kick-only', 0.45],
      verse:   [8, 'i iv i VII',    'chromatic', 'driving',    'double-time',0.8],
      chorus:  [8, 'i v VII iv',    'leap',      'octave',     'full',      1.0],
      bridge:  [4, 'i VII iv i',    'trill',     'syncopated', 'tribal',    0.7],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  // ═══════════════════════════════════════════
  // CHILL (20 songs) — chill_001 to chill_020
  // ═══════════════════════════════════════════

  {
    id: 'chill_001',
    name: 'Sunset Horizon',
    mood: 'Chill',
    energy: 2,
    tempo: 80,
    key: 'C',
    scale: 'major',
    tags: ['sunset', 'calm', 'peaceful'],
    desc: 'Warm golden-hour pads with gentle plucked melodies drifting over a soft beat',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.3, filter: 2000 },
    sections: {
      intro:   [4, 'I vi IV V',     'sustained', 'pedal',      'none',      0.1],
      verse:   [8, 'I IV vi V',     'pentatonic','root',       'sparse',    0.3],
      chorus:  [8, 'I V vi IV',     'legato',    'root-fifth', 'half-time', 0.5],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.1],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_002',
    name: 'Cloud Nine',
    mood: 'Chill',
    energy: 2,
    tempo: 85,
    key: 'D',
    scale: 'lydian',
    tags: ['cloud', 'zen', 'soft'],
    desc: 'Floating lydian dreamscape with airy pads and a delicate crystalline lead',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.35, filter: 1800 },
    sections: {
      intro:   [4, 'I V vi IV',     'sustained', 'pedal',      'none',      0.1],
      verse:   [8, 'I iii IV ii',   'legato',    'root',       'hats-only', 0.25],
      chorus:  [8, 'I IV vi ii',    'pentatonic','root-fifth', 'sparse',    0.4],
      bridge:  [4, 'vi IV I V',     'arp-bounce','arpeggiated','none',      0.2],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_003',
    name: 'Gentle Stream',
    mood: 'Chill',
    energy: 1,
    tempo: 72,
    key: 'F',
    scale: 'major',
    tags: ['stream', 'peaceful', 'meditation'],
    desc: 'Babbling brook ambience with minimal plucked notes and vast reverb spaces',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.4, filter: 1500 },
    sections: {
      intro:   [4, 'I IV I V',      'sustained', 'pedal',      'none',      0.05],
      verse:   [8, 'I ii IV V',     'arp-bounce','root',       'none',      0.15],
      chorus:  [8, 'I V IV I',      'pentatonic','root-fifth', 'sparse',    0.3],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_004',
    name: 'Amber Dusk',
    mood: 'Chill',
    energy: 3,
    tempo: 90,
    key: 'G',
    scale: 'mixolydian',
    tags: ['sunset', 'smooth', 'lounge'],
    desc: 'Laid-back mixolydian groove with a silky lead line and soft shuffled percussion',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.25, filter: 2500 },
    sections: {
      intro:   [4, 'I V vi ii',     'sustained', 'root',       'none',      0.15],
      verse:   [8, 'I IV V IV',     'stepwise',  'root-fifth', 'shuffle',   0.35],
      chorus:  [8, 'IV V I vi',     'legato',    'walking',    'half-time', 0.5],
      bridge:  [4, 'I iii vi IV',   'arp-bounce','arpeggiated','hats-only', 0.3],
      outro:   [4, 'I IV I',        'fade',      'root',       'none',      0.1],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_005',
    name: 'Velvet Rain',
    mood: 'Chill',
    energy: 2,
    tempo: 78,
    key: 'A',
    scale: 'dorian',
    tags: ['rain', 'calm', 'soft'],
    desc: 'Tender dorian rainfall with muted plucks and warm sub-bass undertones',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.55, delay: 0.3, filter: 1800 },
    sections: {
      intro:   [4, 'I ii vi V',     'sustained', 'pedal',      'none',      0.1],
      verse:   [8, 'vi IV I V',     'pentatonic','root',       'sparse',    0.25],
      chorus:  [8, 'I V vi IV',     'legato',    'root-fifth', 'half-time', 0.4],
      outro:   [4, 'I vi I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_006',
    name: 'Morning Dew',
    mood: 'Chill',
    energy: 3,
    tempo: 95,
    key: 'E',
    scale: 'pentatonicMajor',
    tags: ['breeze', 'garden', 'easy'],
    desc: 'Fresh pentatonic morning with sparkling plucks and a gentle rhythmic pulse',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.2, filter: 2800 },
    sections: {
      intro:   [4, 'I IV vi V',     'arp-bounce','root',       'hats-only', 0.15],
      verse:   [8, 'I iii IV V',    'pentatonic','root-fifth', 'shuffle',   0.35],
      chorus:  [8, 'I vi ii V',     'stepwise',  'arpeggiated','half-time', 0.5],
      bridge:  [4, 'IV I V vi',     'legato',    'pedal',      'sparse',    0.25],
      outro:   [4, 'I IV I',        'fade',      'root',       'none',      0.1],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_007',
    name: 'Sapphire Coast',
    mood: 'Chill',
    energy: 3,
    tempo: 92,
    key: 'B',
    scale: 'major',
    tags: ['shore', 'smooth', 'relax'],
    desc: 'Coastal shimmer with wave-like pad swells and a melodic bass walk',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.45, delay: 0.3, filter: 2200 },
    sections: {
      intro:   [4, 'I vi IV V',     'sustained', 'pedal',      'none',      0.1],
      verse:   [8, 'I IV vi ii',    'arp-bounce','walking',    'sparse',    0.35],
      chorus:  [8, 'vi I IV V',     'legato',    'root-fifth', 'half-time', 0.5],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_008',
    name: 'Paper Lanterns',
    mood: 'Chill',
    energy: 2,
    tempo: 76,
    key: 'D#',
    scale: 'lydian',
    tags: ['zen', 'peaceful', 'meditation'],
    desc: 'Floating lydian lantern-light with shimmering overtones and barely-there percussion',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.35, filter: 1600 },
    sections: {
      intro:   [4, 'I V vi IV',     'sustained', 'pedal',      'none',      0.05],
      verse:   [8, 'I IV I V',      'pentatonic','root',       'none',      0.2],
      chorus:  [8, 'I ii IV V',     'legato',    'arpeggiated','hats-only', 0.35],
      bridge:  [4, 'IV V I vi',     'arp-bounce','pedal',      'none',      0.15],
      outro:   [4, 'I IV I',        'fade',      'root',       'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_009',
    name: 'Lavender Fields',
    mood: 'Chill',
    energy: 2,
    tempo: 82,
    key: 'F#',
    scale: 'major',
    tags: ['garden', 'calm', 'soft'],
    desc: 'Pastoral meadow soundscape with singing pads and tiny melodic blossoms',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.3, filter: 2000 },
    sections: {
      intro:   [4, 'I iii vi IV',   'sustained', 'pedal',      'none',      0.1],
      verse:   [8, 'I vi ii V',     'pentatonic','root',       'sparse',    0.25],
      chorus:  [8, 'I IV V vi',     'stepwise',  'root-fifth', 'half-time', 0.4],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_010',
    name: 'Moonlit Canopy',
    mood: 'Chill',
    energy: 1,
    tempo: 70,
    key: 'C#',
    scale: 'dorian',
    tags: ['zen', 'meditation', 'soft'],
    desc: 'Deep forest night ambience with owl-like calls and a hypnotic dorian drone',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.4, filter: 1200 },
    sections: {
      intro:   [4, 'I ii vi V',     'sustained', 'pedal',      'none',      0.05],
      verse:   [8, 'I IV vi V',     'legato',    'root',       'none',      0.15],
      chorus:  [8, 'vi IV V I',     'pentatonic','root-fifth', 'sparse',    0.3],
      outro:   [4, 'I vi I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_011',
    name: 'Drifting Kites',
    mood: 'Chill',
    energy: 3,
    tempo: 100,
    key: 'G#',
    scale: 'pentatonicMajor',
    tags: ['breeze', 'cheerful', 'easy'],
    desc: 'Breezy pentatonic float with a playful pluck melody and airy pad washes',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.2, filter: 2600 },
    sections: {
      intro:   [4, 'I V IV I',      'arp-bounce','root',       'hats-only', 0.2],
      verse:   [8, 'I IV vi V',     'pentatonic','root-fifth', 'shuffle',   0.4],
      chorus:  [8, 'I vi IV V',     'stepwise',  'walking',    'half-time', 0.5],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.1],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_012',
    name: 'Still Waters',
    mood: 'Chill',
    energy: 1,
    tempo: 74,
    key: 'A#',
    scale: 'major',
    tags: ['calm', 'peaceful', 'meditation'],
    desc: 'Mirror-flat lake ambience with slow reverb tails and barely audible melodic whispers',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.4, filter: 1400 },
    sections: {
      intro:   [4, 'I IV I V',      'sustained', 'pedal',      'none',      0.05],
      verse:   [8, 'I vi IV V',     'legato',    'root',       'none',      0.15],
      chorus:  [8, 'I ii vi V',     'pentatonic','root-fifth', 'sparse',    0.25],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_013',
    name: 'Silken Thread',
    mood: 'Chill',
    energy: 3,
    tempo: 96,
    key: 'D',
    scale: 'mixolydian',
    tags: ['smooth', 'lounge', 'easy'],
    desc: 'Sophisticated mixolydian lounge with buttery chords and a cool walking bass',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.2, filter: 2800 },
    sections: {
      intro:   [4, 'I ii IV V',     'stepwise',  'root',       'hats-only', 0.15],
      verse:   [8, 'I iii vi IV',   'legato',    'walking',    'shuffle',   0.4],
      chorus:  [8, 'I V vi ii',     'arp-bounce','root-fifth', 'half-time', 0.55],
      bridge:  [4, 'IV I vi V',     'pentatonic','arpeggiated','sparse',    0.3],
      outro:   [4, 'I IV I',        'fade',      'root',       'none',      0.1],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_014',
    name: 'Porcelain Sky',
    mood: 'Chill',
    energy: 2,
    tempo: 84,
    key: 'E',
    scale: 'lydian',
    tags: ['cloud', 'zen', 'peaceful'],
    desc: 'Delicate lydian sky with bell-like plucks floating over an endless pad horizon',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.55, delay: 0.35, filter: 1900 },
    sections: {
      intro:   [4, 'I V vi IV',     'sustained', 'pedal',      'none',      0.05],
      verse:   [8, 'I iii IV ii',   'pentatonic','root',       'sparse',    0.2],
      chorus:  [8, 'I IV vi V',     'arp-bounce','root-fifth', 'hats-only', 0.35],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_015',
    name: 'Terracotta Noon',
    mood: 'Chill',
    energy: 4,
    tempo: 105,
    key: 'A',
    scale: 'dorian',
    tags: ['smooth', 'lounge', 'relax'],
    desc: 'Sun-baked dorian groove with a loose beat, mellow keys, and an easy bass line',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.2, filter: 2800 },
    sections: {
      intro:   [4, 'I vi IV V',     'stepwise',  'root',       'hats-only', 0.2],
      verse:   [8, 'I IV vi ii',    'legato',    'root-fifth', 'shuffle',   0.45],
      chorus:  [8, 'IV V I vi',     'pentatonic','walking',    'half-time', 0.6],
      bridge:  [4, 'I ii vi V',     'arp-bounce','arpeggiated','sparse',    0.35],
      outro:   [4, 'I IV I',        'fade',      'root',       'none',      0.15],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_016',
    name: 'Snowfall Waltz',
    mood: 'Chill',
    energy: 2,
    tempo: 88,
    key: 'F',
    scale: 'major',
    tags: ['soft', 'calm', 'peaceful'],
    desc: 'Gentle snowfall waltz with twinkling bells and a feather-light three-beat feel',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.3, filter: 2000 },
    sections: {
      intro:   [4, 'I V vi IV',     'sustained', 'pedal',      'none',      0.1],
      verse:   [8, 'I IV V IV',     'arp-bounce','root',       'waltz',     0.3],
      chorus:  [8, 'I vi IV V',     'legato',    'root-fifth', 'waltz',     0.45],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_017',
    name: 'Jasmine Tea',
    mood: 'Chill',
    energy: 2,
    tempo: 78,
    key: 'G',
    scale: 'pentatonicMajor',
    tags: ['zen', 'meditation', 'soft'],
    desc: 'Meditative pentatonic ritual with ceramic-toned plucks and warm bass hum',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.55, delay: 0.35, filter: 1600 },
    sections: {
      intro:   [4, 'I IV I V',      'sustained', 'pedal',      'none',      0.05],
      verse:   [8, 'I V vi IV',     'pentatonic','root',       'none',      0.2],
      chorus:  [8, 'I iii IV V',    'legato',    'root-fifth', 'hats-only', 0.35],
      bridge:  [4, 'vi IV I V',     'arp-bounce','arpeggiated','none',      0.15],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_018',
    name: 'Indigo Hour',
    mood: 'Chill',
    energy: 3,
    tempo: 98,
    key: 'B',
    scale: 'dorian',
    tags: ['smooth', 'lounge', 'sunset'],
    desc: 'Deep dorian twilight groove with a muted lead, lush pads, and subtle swing',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.25, filter: 2400 },
    sections: {
      intro:   [4, 'I ii vi V',     'sustained', 'root',       'hats-only', 0.15],
      verse:   [8, 'I IV vi V',     'stepwise',  'root-fifth', 'shuffle',   0.4],
      chorus:  [8, 'vi IV V I',     'legato',    'walking',    'half-time', 0.55],
      outro:   [4, 'I vi I',        'fade',      'pedal',      'none',      0.1],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_019',
    name: 'Floating Feather',
    mood: 'Chill',
    energy: 1,
    tempo: 70,
    key: 'C',
    scale: 'lydian',
    tags: ['cloud', 'peaceful', 'meditation'],
    desc: 'Weightless lydian drift with overtone-rich pads and the faintest melodic outline',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.4, filter: 1200 },
    sections: {
      intro:   [4, 'I V vi IV',     'sustained', 'pedal',      'none',      0.05],
      verse:   [8, 'I IV vi ii',    'legato',    'root',       'none',      0.15],
      chorus:  [8, 'I V IV I',      'pentatonic','root-fifth', 'sparse',    0.25],
      outro:   [4, 'I IV I',        'fade',      'pedal',      'none',      0.05],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'chill_020',
    name: 'Harbor Lights',
    mood: 'Chill',
    energy: 4,
    tempo: 110,
    key: 'F#',
    scale: 'mixolydian',
    tags: ['shore', 'smooth', 'relax'],
    desc: 'Warm harbor-side mixolydian jam with a steady pulse and reflective melodic phrases',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.2, filter: 3000 },
    sections: {
      intro:   [4, 'I V vi IV',     'stepwise',  'root',       'hats-only', 0.2],
      verse:   [8, 'I vi IV V',     'pentatonic','root-fifth', 'shuffle',   0.45],
      chorus:  [8, 'I ii IV V',     'legato',    'walking',    'standard',  0.6],
      bridge:  [4, 'IV I vi V',     'arp-bounce','arpeggiated','sparse',    0.35],
      outro:   [4, 'I IV I',        'fade',      'root',       'none',      0.1],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  // ═══════════════════════════════════════════
  // INTENSE (20 songs) — intense_001 to intense_020
  // ═══════════════════════════════════════════

  {
    id: 'intense_001',
    name: 'Midnight Chase',
    mood: 'Intense',
    energy: 9,
    tempo: 160,
    key: 'C',
    scale: 'minor',
    tags: ['chase', 'urgent', 'adrenaline'],
    desc: 'Heart-pounding minor key pursuit with relentless four-on-floor and staccato stabs',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.15, delay: 0.1, filter: 5000 },
    sections: {
      intro:   [4, 'i VII VI VII',  'ostinato',  'pumping',    'kick-only', 0.5],
      verse:   [8, 'i v iv VII',    'staccato',  'driving',    'four-on-floor',0.8],
      chorus:  [8, 'i VII i VII',   'rhythmic',  'octave',     'full',      0.95],
      bridge:  [4, 'i iv i VII',    'trill',     'syncopated', 'breakbeat', 0.7],
      outro:   [4, 'i VII i',       'ostinato',  'pumping',    'four-on-floor',0.6],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'intense_002',
    name: 'Fury Unleashed',
    mood: 'Intense',
    energy: 10,
    tempo: 175,
    key: 'D',
    scale: 'phrygian',
    tags: ['fury', 'aggressive', 'rampage'],
    desc: 'Phrygian berserker rage with distorted bass, frantic leads, and pummeling kicks',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.1, delay: 0.05, filter: 7000 },
    sections: {
      intro:   [4, 'i i i VII',     'chromatic', 'pumping',    'double-time',0.6],
      verse:   [8, 'i v i iv',      'staccato',  'driving',    'four-on-floor',0.85],
      chorus:  [8, 'i VII iv i',    'rhythmic',  'octave',     'full',      1.0],
      break1:  [4, 'i III i VII',   'trill',     'syncopated', 'breakbeat', 0.75],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_003',
    name: 'Overdrive',
    mood: 'Intense',
    energy: 9,
    tempo: 155,
    key: 'E',
    scale: 'minor',
    tags: ['overdrive', 'fast', 'thrilling'],
    desc: 'Redlined engine energy with screaming synths and a breakneck tempo that never lets up',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.15, delay: 0.1, filter: 5500 },
    sections: {
      intro:   [4, 'i iv i VII',    'ostinato',  'pumping',    'kick-only', 0.5],
      verse:   [8, 'i VII i VII',   'ascending', 'driving',    'four-on-floor',0.8],
      chorus:  [8, 'i v iv VII',    'rhythmic',  'octave',     'full',      0.95],
      bridge:  [4, 'i iv VII i',    'chromatic', 'syncopated', 'double-time',0.7],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_004',
    name: 'Razor Edge',
    mood: 'Intense',
    energy: 10,
    tempo: 170,
    key: 'F',
    scale: 'harmonicMinor',
    tags: ['danger', 'aggressive', 'combat'],
    desc: 'Razor-sharp harmonic minor slashes with searing leads and machine-gun percussion',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.1, delay: 0.08, filter: 6500 },
    sections: {
      intro:   [4, 'i v i VII',     'trill',     'pumping',    'double-time',0.6],
      verse:   [8, 'i iv v iv',     'chromatic', 'driving',    'four-on-floor',0.85],
      chorus:  [8, 'i VII v iv',    'staccato',  'octave',     'full',      1.0],
      bridge:  [4, 'i i iv VII',    'ostinato',  'syncopated', 'breakbeat', 0.75],
      outro:   [4, 'i VII i',       'rhythmic',  'pumping',    'kick-only', 0.5],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_005',
    name: 'Panic Protocol',
    mood: 'Intense',
    energy: 9,
    tempo: 165,
    key: 'G',
    scale: 'minor',
    tags: ['panic', 'urgent', 'pursuit'],
    desc: 'Emergency klaxon energy with alarm-like leads and a propulsive bass engine',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.12, delay: 0.1, filter: 6000 },
    sections: {
      intro:   [4, 'i VI i VII',    'ascending', 'pumping',    'kick-only', 0.5],
      verse:   [8, 'i iv v iv',     'staccato',  'driving',    'four-on-floor',0.8],
      chorus:  [8, 'i v i iv',      'rhythmic',  'octave',     'full',      0.95],
      bridge:  [4, 'i VII i iv',    'trill',     'syncopated', 'double-time',0.7],
      outro:   [4, 'i VII i',       'ostinato',  'pumping',    'four-on-floor',0.55],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_006',
    name: 'Blitz Reaper',
    mood: 'Intense',
    energy: 10,
    tempo: 180,
    key: 'A',
    scale: 'phrygian',
    tags: ['blitz', 'fierce', 'frenzy'],
    desc: 'Maximum-speed phrygian onslaught with unrelenting double-time drums and savage riffs',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.1, delay: 0.05, filter: 8000 },
    sections: {
      intro:   [4, 'i VII i VII',   'chromatic', 'pumping',    'double-time',0.65],
      verse:   [8, 'i v VII iv',    'staccato',  'driving',    'double-time',0.9],
      chorus:  [8, 'i III VII i',   'rhythmic',  'octave',     'full',      1.0],
      break1:  [4, 'i iv i v',      'trill',     'syncopated', 'breakbeat', 0.75],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_007',
    name: 'Neon Inferno',
    mood: 'Intense',
    energy: 9,
    tempo: 150,
    key: 'B',
    scale: 'blues',
    tags: ['adrenaline', 'thrilling', 'fast'],
    desc: 'Blues-infused neon hellscape with gritty lead bends and a stomping groove',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.12, filter: 5000 },
    sections: {
      intro:   [4, 'i iv i VII',    'blues',     'pumping',    'kick-only', 0.45],
      verse:   [8, 'i VII i iv',    'rhythmic',  'driving',    'standard',  0.75],
      chorus:  [8, 'i v iv VII',    'staccato',  'octave',     'full',      0.9],
      bridge:  [4, 'i iv VII i',    'chromatic', 'syncopated', 'breakbeat', 0.65],
      outro:   [4, 'i VII i',       'ostinato',  'pumping',    'standard',  0.5],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_008',
    name: 'Shockwave',
    mood: 'Intense',
    energy: 10,
    tempo: 172,
    key: 'C#',
    scale: 'harmonicMinor',
    tags: ['combat', 'aggressive', 'fierce'],
    desc: 'Explosive harmonic minor shockblast with staccato stabs and obliterating drops',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.1, delay: 0.08, filter: 7500 },
    sections: {
      intro:   [4, 'i v i VII',     'ostinato',  'pumping',    'double-time',0.6],
      verse:   [8, 'i VI i VII',    'chromatic', 'driving',    'four-on-floor',0.85],
      chorus:  [8, 'i iv v iv',     'staccato',  'octave',     'full',      1.0],
      bridge:  [4, 'i VII iv i',    'trill',     'syncopated', 'breakbeat', 0.7],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_009',
    name: 'Terminal Velocity',
    mood: 'Intense',
    energy: 9,
    tempo: 162,
    key: 'D#',
    scale: 'minor',
    tags: ['fast', 'pursuit', 'adrenaline'],
    desc: 'Free-falling velocity rush with whipping arpeggios and an unstoppable beat',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.15, delay: 0.1, filter: 5500 },
    sections: {
      intro:   [4, 'i III i VII',   'ascending', 'pumping',    'kick-only', 0.5],
      verse:   [8, 'i iv i v',      'staccato',  'driving',    'four-on-floor',0.8],
      chorus:  [8, 'i v i iv',      'rhythmic',  'octave',     'full',      0.95],
      bridge:  [4, 'i VII v iv',    'ostinato',  'syncopated', 'double-time',0.7],
      outro:   [4, 'i VII i',       'chromatic', 'pumping',    'four-on-floor',0.55],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_010',
    name: 'Venom Strike',
    mood: 'Intense',
    energy: 10,
    tempo: 168,
    key: 'F#',
    scale: 'phrygian',
    tags: ['danger', 'combat', 'rampage'],
    desc: 'Venomous phrygian attack with serpentine lead phrases and toxic bass drops',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.1, delay: 0.06, filter: 7000 },
    sections: {
      intro:   [4, 'i v iv i',      'chromatic', 'pumping',    'double-time',0.6],
      verse:   [8, 'i VII i VII',   'staccato',  'driving',    'four-on-floor',0.85],
      chorus:  [8, 'i iv VII i',    'rhythmic',  'octave',     'full',      1.0],
      break1:  [4, 'i v i iv',      'trill',     'syncopated', 'breakbeat', 0.7],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_011',
    name: 'Wraith Runner',
    mood: 'Intense',
    energy: 9,
    tempo: 156,
    key: 'G#',
    scale: 'harmonicMinor',
    tags: ['chase', 'thrilling', 'urgent'],
    desc: 'Ghostly harmonic minor sprint with phasing leads and a thundering rhythmic foundation',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.18, delay: 0.12, filter: 5500 },
    sections: {
      intro:   [4, 'i iv i VII',    'ostinato',  'pumping',    'kick-only', 0.5],
      verse:   [8, 'i v i VII',     'ascending', 'driving',    'standard',  0.8],
      chorus:  [8, 'i VII i iv',    'staccato',  'octave',     'full',      0.95],
      bridge:  [4, 'i iv v iv',     'chromatic', 'syncopated', 'double-time',0.7],
      outro:   [4, 'i VII i',       'rhythmic',  'pumping',    'standard',  0.5],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_012',
    name: 'Meltdown',
    mood: 'Intense',
    energy: 10,
    tempo: 176,
    key: 'A#',
    scale: 'chromatic',
    tags: ['frenzy', 'aggressive', 'panic'],
    desc: 'Nuclear meltdown chaos with chromatic madness and total percussive devastation',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.1, delay: 0.05, filter: 8000 },
    sections: {
      intro:   [4, 'i VII i VII',   'chromatic', 'pumping',    'double-time',0.65],
      verse:   [8, 'i i iv VII',    'staccato',  'driving',    'four-on-floor',0.9],
      chorus:  [8, 'i v VII iv',    'rhythmic',  'octave',     'full',      1.0],
      break1:  [4, 'i iv i v',      'trill',     'syncopated', 'breakbeat', 0.75],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_013',
    name: 'Iron Lung',
    mood: 'Intense',
    energy: 8,
    tempo: 148,
    key: 'C',
    scale: 'blues',
    tags: ['fierce', 'thrilling', 'overdrive'],
    desc: 'Breathless blues-scale assault with a heavy swing and gritty overdriven bass',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.12, filter: 4500 },
    sections: {
      intro:   [4, 'i iv i VII',    'blues',     'pumping',    'kick-only', 0.45],
      verse:   [8, 'i VII iv i',    'rhythmic',  'driving',    'standard',  0.7],
      chorus:  [8, 'i v iv VII',    'staccato',  'octave',     'full',      0.9],
      bridge:  [4, 'i III i VII',   'ascending', 'syncopated', 'breakbeat', 0.6],
      outro:   [4, 'i VII i',       'ostinato',  'pumping',    'standard',  0.5],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_014',
    name: 'Voltage Surge',
    mood: 'Intense',
    energy: 9,
    tempo: 158,
    key: 'D',
    scale: 'minor',
    tags: ['adrenaline', 'fast', 'urgent'],
    desc: 'Electric voltage spike with buzzing FM leads and an unstoppable rhythmic charge',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.15, delay: 0.1, filter: 6000 },
    sections: {
      intro:   [4, 'i v i VII',     'ostinato',  'pumping',    'kick-only', 0.5],
      verse:   [8, 'i iv i VII',    'ascending', 'driving',    'four-on-floor',0.8],
      chorus:  [8, 'i VII i iv',    'staccato',  'octave',     'full',      0.95],
      bridge:  [4, 'i v iv i',      'chromatic', 'syncopated', 'double-time',0.7],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_015',
    name: 'Reckless Descent',
    mood: 'Intense',
    energy: 9,
    tempo: 152,
    key: 'E',
    scale: 'harmonicMinor',
    tags: ['danger', 'thrilling', 'pursuit'],
    desc: 'Spiraling harmonic minor descent with cascading leads and hammering kicks',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.15, delay: 0.1, filter: 5500 },
    sections: {
      intro:   [4, 'i VII VI VII',  'descending','pumping',    'kick-only', 0.45],
      verse:   [8, 'i v i iv',      'staccato',  'driving',    'standard',  0.75],
      chorus:  [8, 'i iv VII i',    'rhythmic',  'octave',     'full',      0.9],
      bridge:  [4, 'i VII i VII',   'chromatic', 'syncopated', 'breakbeat', 0.65],
      outro:   [4, 'i VII i',       'descending','pumping',    'four-on-floor',0.5],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_016',
    name: 'Firestorm Protocol',
    mood: 'Intense',
    energy: 10,
    tempo: 174,
    key: 'F',
    scale: 'phrygian',
    tags: ['combat', 'aggressive', 'blitz'],
    desc: 'Scorched-earth phrygian devastation with relentless snare rolls and wall-of-sound bass',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.1, delay: 0.06, filter: 7500 },
    sections: {
      intro:   [4, 'i i i VII',     'ostinato',  'pumping',    'double-time',0.6],
      verse:   [8, 'i v i iv',      'chromatic', 'driving',    'four-on-floor',0.85],
      chorus:  [8, 'i iv i v',      'staccato',  'octave',     'full',      1.0],
      break1:  [4, 'i VI VII i',    'trill',     'syncopated', 'breakbeat', 0.75],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_017',
    name: 'Cascade Fury',
    mood: 'Intense',
    energy: 8,
    tempo: 145,
    key: 'G',
    scale: 'minor',
    tags: ['fierce', 'pursuit', 'thrilling'],
    desc: 'Cascading minor fury with tumbling melodic runs and a rock-solid groove foundation',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.12, filter: 4500 },
    sections: {
      intro:   [4, 'i VII i iv',    'descending','pumping',    'kick-only', 0.45],
      verse:   [8, 'i iv v iv',     'rhythmic',  'driving',    'standard',  0.7],
      chorus:  [8, 'i VII i VII',   'ascending', 'octave',     'full',      0.9],
      bridge:  [4, 'i v i iv',      'ostinato',  'syncopated', 'breakbeat', 0.6],
      outro:   [4, 'i VII i',       'staccato',  'pumping',    'standard',  0.5],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_018',
    name: 'Deathline Express',
    mood: 'Intense',
    energy: 10,
    tempo: 178,
    key: 'A',
    scale: 'harmonicMinor',
    tags: ['frenzy', 'rampage', 'aggressive'],
    desc: 'Runaway-train harmonic minor express with breakneck speed and zero stopping power',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.1, delay: 0.05, filter: 7000 },
    sections: {
      intro:   [4, 'i VII i VII',   'chromatic', 'pumping',    'double-time',0.65],
      verse:   [8, 'i v iv VII',    'staccato',  'driving',    'double-time',0.9],
      chorus:  [8, 'i iv i v',      'rhythmic',  'octave',     'full',      1.0],
      break1:  [4, 'i VII iv i',    'trill',     'syncopated', 'breakbeat', 0.75],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'intense_019',
    name: 'Concrete Jungle',
    mood: 'Intense',
    energy: 8,
    tempo: 142,
    key: 'B',
    scale: 'blues',
    tags: ['urgent', 'adrenaline', 'thrilling'],
    desc: 'Gritty urban blues assault with dirty bass growls and relentless breakbeat energy',
    synths: { lead: 'FM', pad: 'Mono', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.15, filter: 4000 },
    sections: {
      intro:   [4, 'i iv i VII',    'blues',     'pumping',    'kick-only', 0.45],
      verse:   [8, 'i VII i iv',    'rhythmic',  'driving',    'breakbeat', 0.7],
      chorus:  [8, 'i v iv VII',    'staccato',  'octave',     'full',      0.85],
      bridge:  [4, 'i iv v iv',     'ascending', 'syncopated', 'standard',  0.6],
      outro:   [4, 'i VII i',       'ostinato',  'pumping',    'breakbeat', 0.5],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'intense_020',
    name: 'Event Horizon',
    mood: 'Intense',
    energy: 9,
    tempo: 164,
    key: 'D#',
    scale: 'chromatic',
    tags: ['danger', 'panic', 'fast'],
    desc: 'Reality-warping chromatic vortex pulling everything into a relentless rhythmic singularity',
    synths: { lead: 'FM', pad: 'Membrane', bass: 'Mono' },
    fx: { reverb: 0.12, delay: 0.08, filter: 6500 },
    sections: {
      intro:   [4, 'i v i VII',     'chromatic', 'pumping',    'kick-only', 0.5],
      verse:   [8, 'i iv i VII',    'staccato',  'driving',    'four-on-floor',0.8],
      chorus:  [8, 'i VII v iv',    'rhythmic',  'octave',     'full',      0.95],
      bridge:  [4, 'i v iv i',      'trill',     'syncopated', 'double-time',0.7],
      outro:   [4, 'i VII i',       'chromatic', 'pumping',    'four-on-floor',0.55],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  // ═══════════════════════════════════════════
  // PLAYFUL (20 songs) — playful_001 to playful_020
  // ═══════════════════════════════════════════

  {
    id: 'playful_001',
    name: 'Bubble Pop',
    mood: 'Playful',
    energy: 6,
    tempo: 130,
    key: 'C',
    scale: 'major',
    tags: ['fun', 'bouncy', 'bubble'],
    desc: 'Bouncy pop confection with fizzy pluck melodies and a toe-tapping beat',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.15, filter: 3000 },
    sections: {
      intro:   [4, 'I V vi IV',     'arp-up',    'root-fifth', 'standard',  0.4],
      verse:   [8, 'I IV V I',      'staccato',  'arpeggiated','shuffle',   0.6],
      chorus:  [8, 'I vi IV V',     'arp-bounce','octave',     'four-on-floor',0.8],
      bridge:  [4, 'IV V I vi',     'pentatonic','syncopated', 'breakbeat', 0.55],
      outro:   [4, 'I IV I',        'arp-up',    'root',       'standard',  0.35],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus', 'outro'],
  },

  {
    id: 'playful_002',
    name: 'Candy Rush',
    mood: 'Playful',
    energy: 7,
    tempo: 140,
    key: 'D',
    scale: 'mixolydian',
    tags: ['candy', 'happy', 'party'],
    desc: 'Sugar-coated mixolydian romp with rapid-fire melodies and a party-floor beat',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Pluck' },
    fx: { reverb: 0.2, delay: 0.15, filter: 3500 },
    sections: {
      intro:   [4, 'I V IV V',      'arp-bounce','root-fifth', 'standard',  0.45],
      verse:   [8, 'I iii IV V',    'staccato',  'octave',     'four-on-floor',0.65],
      chorus:  [8, 'I IV V vi',     'leap',      'arpeggiated','full',      0.85],
      bridge:  [4, 'vi IV I V',     'pentatonic','syncopated', 'shuffle',   0.55],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'bridge', 'chorus'],
  },

  {
    id: 'playful_003',
    name: 'Skip & Jump',
    mood: 'Playful',
    energy: 5,
    tempo: 120,
    key: 'F',
    scale: 'major',
    tags: ['skip', 'cheerful', 'lighthearted'],
    desc: 'Carefree skip-along with a lilting melody, simple chords, and a playful shuffle',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.2, filter: 2800 },
    sections: {
      intro:   [4, 'I vi IV V',     'arp-up',    'root',       'shuffle',   0.3],
      verse:   [8, 'I IV V I',      'pentatonic','root-fifth', 'shuffle',   0.5],
      chorus:  [8, 'I V vi IV',     'leap',      'walking',    'standard',  0.7],
      outro:   [4, 'I IV I',        'arp-bounce','root',       'shuffle',   0.35],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_004',
    name: 'Sunshine Express',
    mood: 'Playful',
    energy: 6,
    tempo: 135,
    key: 'G',
    scale: 'lydian',
    tags: ['sunshine', 'happy', 'dance'],
    desc: 'Bright lydian sunshine ride with sparkling chords and an infectious rhythmic hook',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.2, filter: 3200 },
    sections: {
      intro:   [4, 'I IV I V',      'arp-up',    'root-fifth', 'hats-only', 0.3],
      verse:   [8, 'I ii IV V',     'staccato',  'arpeggiated','standard',  0.55],
      chorus:  [8, 'I V vi ii',     'leap',      'octave',     'four-on-floor',0.8],
      bridge:  [4, 'I iii vi V',    'pentatonic','walking',    'shuffle',   0.5],
      outro:   [4, 'I IV I',        'arp-bounce','root',       'standard',  0.35],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_005',
    name: 'Frog Hop',
    mood: 'Playful',
    energy: 5,
    tempo: 118,
    key: 'A',
    scale: 'pentatonicMajor',
    tags: ['jump', 'silly', 'cartoon'],
    desc: 'Quirky pentatonic hop with bouncing bass notes and a whimsical plucked melody',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Pluck' },
    fx: { reverb: 0.3, delay: 0.2, filter: 2500 },
    sections: {
      intro:   [4, 'I IV V I',      'arp-bounce','root-fifth', 'standard',  0.35],
      verse:   [8, 'I vi V IV',     'pentatonic','arpeggiated','shuffle',   0.5],
      chorus:  [8, 'IV I V I',      'staccato',  'octave',     'standard',  0.7],
      bridge:  [4, 'I vi IV ii',    'blues',     'walking',    'breakbeat', 0.5],
      outro:   [4, 'I IV I',        'arp-bounce','root',       'standard',  0.3],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_006',
    name: 'Pixel Parade',
    mood: 'Playful',
    energy: 6,
    tempo: 132,
    key: 'E',
    scale: 'major',
    tags: ['fun', 'cheerful', 'party'],
    desc: 'Retro pixel-art parade with chiptuney leads and a marching festival vibe',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.15, filter: 3500 },
    sections: {
      intro:   [4, 'I V vi IV',     'arp-up',    'root-fifth', 'march',     0.4],
      verse:   [8, 'I iii IV V',    'staccato',  'walking',    'march',     0.6],
      chorus:  [8, 'I IV V vi',     'leap',      'octave',     'standard',  0.8],
      bridge:  [4, 'vi IV I V',     'arp-bounce','syncopated', 'breakbeat', 0.55],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'playful_007',
    name: 'Jellybean Bounce',
    mood: 'Playful',
    energy: 7,
    tempo: 142,
    key: 'B',
    scale: 'mixolydian',
    tags: ['bouncy', 'candy', 'dance'],
    desc: 'Maximum-bounce mixolydian groove with rubbery bass and a sugary melodic hook',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Pluck' },
    fx: { reverb: 0.2, delay: 0.15, filter: 3800 },
    sections: {
      intro:   [4, 'I V IV vi',     'arp-bounce','root-fifth', 'four-on-floor',0.45],
      verse:   [8, 'I IV vi V',     'staccato',  'arpeggiated','standard',  0.65],
      chorus:  [8, 'IV V vi I',     'leap',      'octave',     'four-on-floor',0.85],
      bridge:  [4, 'I ii V IV',     'pentatonic','syncopated', 'shuffle',   0.55],
      outro:   [4, 'I IV I',        'arp-bounce','root',       'standard',  0.35],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_008',
    name: 'Rainbow Sprinkles',
    mood: 'Playful',
    energy: 5,
    tempo: 125,
    key: 'C#',
    scale: 'lydian',
    tags: ['rainbow', 'happy', 'lighthearted'],
    desc: 'Colorful lydian celebration with chiming leads and a gentle, flowing groove',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.2, filter: 2800 },
    sections: {
      intro:   [4, 'I IV V I',      'arp-up',    'root',       'hats-only', 0.3],
      verse:   [8, 'I vi IV V',     'pentatonic','root-fifth', 'shuffle',   0.5],
      chorus:  [8, 'I V IV V',      'arp-bounce','arpeggiated','standard',  0.7],
      outro:   [4, 'I IV I',        'arp-up',    'root',       'hats-only', 0.25],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_009',
    name: 'Trampoline',
    mood: 'Playful',
    energy: 7,
    tempo: 145,
    key: 'D#',
    scale: 'major',
    tags: ['jump', 'bouncy', 'fun'],
    desc: 'Sky-high trampoline energy with elastic bass and soaring staccato rebounds',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Pluck' },
    fx: { reverb: 0.2, delay: 0.1, filter: 4000 },
    sections: {
      intro:   [4, 'I vi IV V',     'staccato',  'root-fifth', 'standard',  0.45],
      verse:   [8, 'I IV V vi',     'arp-bounce','octave',     'four-on-floor',0.65],
      chorus:  [8, 'I V vi IV',     'leap',      'arpeggiated','full',      0.85],
      bridge:  [4, 'I iii vi V',    'pentatonic','syncopated', 'breakbeat', 0.55],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'playful_010',
    name: 'Whirlwind Waltz',
    mood: 'Playful',
    energy: 4,
    tempo: 115,
    key: 'F#',
    scale: 'major',
    tags: ['dance', 'cheerful', 'lighthearted'],
    desc: 'Gentle whirlwind waltz with graceful plucks and a charming three-beat lilt',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.2, filter: 2500 },
    sections: {
      intro:   [4, 'I V vi IV',     'arp-up',    'root',       'waltz',     0.3],
      verse:   [8, 'I IV I V',      'stepwise',  'root-fifth', 'waltz',     0.5],
      chorus:  [8, 'I vi IV V',     'leap',      'walking',    'waltz',     0.7],
      outro:   [4, 'I IV I',        'arp-down',  'root',       'waltz',     0.25],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_011',
    name: 'Firefly Festival',
    mood: 'Playful',
    energy: 5,
    tempo: 122,
    key: 'G#',
    scale: 'pentatonicMajor',
    tags: ['cheerful', 'fun', 'frolic'],
    desc: 'Twinkling firefly night with dancing pentatonic melodies and a warm, steady pulse',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.25, filter: 2600 },
    sections: {
      intro:   [4, 'I IV vi V',     'pentatonic','root',       'hats-only', 0.25],
      verse:   [8, 'I vi IV V',     'arp-bounce','root-fifth', 'shuffle',   0.5],
      chorus:  [8, 'I V IV vi',     'staccato',  'arpeggiated','standard',  0.7],
      bridge:  [4, 'IV V I vi',     'pentatonic','walking',    'shuffle',   0.45],
      outro:   [4, 'I IV I',        'arp-up',    'root',       'hats-only', 0.2],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_012',
    name: 'Lollipop Lane',
    mood: 'Playful',
    energy: 6,
    tempo: 128,
    key: 'A#',
    scale: 'major',
    tags: ['candy', 'silly', 'cartoon'],
    desc: 'Sweet lollipop stroll with cartoon-like sound effects and a skip-worthy rhythm',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Pluck' },
    fx: { reverb: 0.25, delay: 0.2, filter: 3000 },
    sections: {
      intro:   [4, 'I IV V I',      'arp-up',    'root-fifth', 'standard',  0.35],
      verse:   [8, 'I iii IV V',    'pentatonic','arpeggiated','shuffle',   0.55],
      chorus:  [8, 'I V vi IV',     'leap',      'octave',     'four-on-floor',0.8],
      bridge:  [4, 'I vi V IV',     'blues',     'syncopated', 'breakbeat', 0.5],
      outro:   [4, 'I IV I',        'staccato',  'root',       'standard',  0.3],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_013',
    name: 'Dizzy Spin',
    mood: 'Playful',
    energy: 7,
    tempo: 148,
    key: 'E',
    scale: 'dorian',
    tags: ['fun', 'dance', 'party'],
    desc: 'Dizzying dorian spin cycle with whirling arpeggios and a head-bobbing groove',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.15, filter: 3500 },
    sections: {
      intro:   [4, 'I ii IV V',     'arp-up',    'root-fifth', 'four-on-floor',0.4],
      verse:   [8, 'I V vi ii',     'staccato',  'driving',    'standard',  0.65],
      chorus:  [8, 'I IV V vi',     'arp-bounce','octave',     'four-on-floor',0.85],
      break1:  [4, 'IV V I vi',     'pentatonic','syncopated', 'breakbeat', 0.55],
    },
    form: ['intro', 'verse', 'chorus', 'break1', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'playful_014',
    name: 'Cotton Candy Clouds',
    mood: 'Playful',
    energy: 4,
    tempo: 112,
    key: 'F',
    scale: 'lydian',
    tags: ['cloud', 'happy', 'lighthearted'],
    desc: 'Fluffy lydian cotton-candy float with soft plucks and dreamy pad wisps',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.25, filter: 2200 },
    sections: {
      intro:   [4, 'I V vi IV',     'sustained', 'root',       'hats-only', 0.2],
      verse:   [8, 'I iii vi V',    'pentatonic','root-fifth', 'shuffle',   0.4],
      chorus:  [8, 'I IV vi V',     'arp-bounce','arpeggiated','half-time', 0.6],
      outro:   [4, 'I IV I',        'arp-up',    'root',       'hats-only', 0.2],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_015',
    name: 'Pinball Wizard',
    mood: 'Playful',
    energy: 7,
    tempo: 150,
    key: 'A',
    scale: 'mixolydian',
    tags: ['fun', 'bouncy', 'party'],
    desc: 'Rapid-fire pinball ricochet with dinging FM leads and a hyperactive bassline',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Pluck' },
    fx: { reverb: 0.2, delay: 0.1, filter: 4000 },
    sections: {
      intro:   [4, 'V I IV I',      'staccato',  'root-fifth', 'standard',  0.45],
      verse:   [8, 'I vi IV ii',    'arp-bounce','arpeggiated','four-on-floor',0.65],
      chorus:  [8, 'I V IV vi',     'leap',      'octave',     'full',      0.85],
      bridge:  [4, 'I iii vi V',    'blues',     'syncopated', 'breakbeat', 0.55],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'chorus'],
  },

  {
    id: 'playful_016',
    name: 'Confetti Cannon',
    mood: 'Playful',
    energy: 6,
    tempo: 138,
    key: 'B',
    scale: 'major',
    tags: ['party', 'cheerful', 'dance'],
    desc: 'Explosive confetti burst with bright staccato hits and a celebratory chorus',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.15, filter: 3500 },
    sections: {
      intro:   [4, 'I IV V I',      'arp-up',    'root-fifth', 'standard',  0.4],
      verse:   [8, 'I vi IV V',     'staccato',  'walking',    'standard',  0.6],
      chorus:  [8, 'IV V vi I',     'leap',      'octave',     'four-on-floor',0.8],
      bridge:  [4, 'I ii V IV',     'arp-bounce','syncopated', 'breakbeat', 0.55],
      outro:   [4, 'I IV I',        'arp-up',    'root',       'standard',  0.35],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_017',
    name: 'Rubber Duck',
    mood: 'Playful',
    energy: 5,
    tempo: 116,
    key: 'D',
    scale: 'pentatonicMajor',
    tags: ['silly', 'cartoon', 'fun'],
    desc: 'Squeaky-clean pentatonic ditty with rubbery bass plucks and a goofy swing',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Pluck' },
    fx: { reverb: 0.3, delay: 0.2, filter: 2500 },
    sections: {
      intro:   [4, 'I IV vi V',     'pentatonic','root',       'shuffle',   0.3],
      verse:   [8, 'I V vi IV',     'arp-bounce','root-fifth', 'shuffle',   0.5],
      chorus:  [8, 'I iii IV V',    'staccato',  'arpeggiated','standard',  0.7],
      bridge:  [4, 'vi IV V I',     'blues',     'walking',    'shuffle',   0.45],
      outro:   [4, 'I IV I',        'pentatonic','root',       'shuffle',   0.25],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_018',
    name: 'Kite Runner',
    mood: 'Playful',
    energy: 5,
    tempo: 124,
    key: 'G',
    scale: 'dorian',
    tags: ['frolic', 'lighthearted', 'breeze'],
    desc: 'Breezy dorian kite flight with soaring lead phrases and a playful rhythmic tug',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.2, filter: 2800 },
    sections: {
      intro:   [4, 'I IV V vi',     'arp-up',    'root',       'hats-only', 0.25],
      verse:   [8, 'I vi IV V',     'pentatonic','root-fifth', 'standard',  0.5],
      chorus:  [8, 'I V vi ii',     'leap',      'walking',    'shuffle',   0.7],
      outro:   [4, 'I IV I',        'arp-down',  'root',       'hats-only', 0.2],
    },
    form: ['intro', 'verse', 'chorus', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_019',
    name: 'Pancake Flip',
    mood: 'Playful',
    energy: 6,
    tempo: 134,
    key: 'C',
    scale: 'mixolydian',
    tags: ['silly', 'fun', 'bouncy'],
    desc: 'Morning-kitchen mixolydian jam with flippy rhythms and a warm, buttery tone',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.15, filter: 3200 },
    sections: {
      intro:   [4, 'I V IV I',      'staccato',  'root-fifth', 'standard',  0.4],
      verse:   [8, 'I IV V vi',     'arp-bounce','arpeggiated','shuffle',   0.6],
      chorus:  [8, 'I vi IV ii',    'leap',      'octave',     'four-on-floor',0.8],
      bridge:  [4, 'IV I V I',      'pentatonic','syncopated', 'breakbeat', 0.5],
      outro:   [4, 'I IV I',        'arp-up',    'root',       'standard',  0.3],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  {
    id: 'playful_020',
    name: 'Starlight Carousel',
    mood: 'Playful',
    energy: 4,
    tempo: 110,
    key: 'F#',
    scale: 'lydian',
    tags: ['dance', 'happy', 'lighthearted'],
    desc: 'Enchanted carousel spin with twinkling lydian bells and a gentle, revolving rhythm',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.25, filter: 2400 },
    sections: {
      intro:   [4, 'I V vi IV',     'arp-up',    'root',       'waltz',     0.2],
      verse:   [8, 'I iii vi V',    'pentatonic','root-fifth', 'waltz',     0.45],
      chorus:  [8, 'I IV vi V',     'arp-bounce','arpeggiated','waltz',     0.65],
      bridge:  [4, 'IV V I vi',     'stepwise',  'walking',    'shuffle',   0.4],
      outro:   [4, 'I IV I',        'arp-down',  'root',       'waltz',     0.2],
    },
    form: ['intro', 'verse', 'chorus', 'bridge', 'verse', 'chorus', 'outro'],
  },

  // ═══════════════════════════════════════════
  // MYSTERIOUS (20 songs) — mysterious_001 to mysterious_020
  // ═══════════════════════════════════════════
  {
    id: 'mysterious_001',
    name: 'Shadow Waltz',
    mood: 'Mysterious',
    energy: 3,
    tempo: 95,
    key: 'D',
    scale: 'phrygian',
    tags: ['mystery', 'dark', 'suspense'],
    desc: 'Eerie waltz with unsettling chromatic turns and ghostly reverberations',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.55, delay: 0.35, filter: 1200 },
    sections: {
      intro:   [4, 'i bII i bII',     'chromatic',  'pedal',       'waltz',     0.2],
      verse:   [8, 'i iv bII bVI',     'stepwise',   'walking',     'sparse',    0.4],
      chorus:  [8, 'bVI bVII i V',     'leap',       'root-fifth',  'standard',  0.6],
      bridge:  [4, 'iv V i bII',       'trill',      'chromatic',   'none',      0.3],
      outro:   [4, 'i',                'fade',        'pedal',       'sparse',    0.15],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_002',
    name: "Phantom's Riddle",
    mood: 'Mysterious',
    energy: 4,
    tempo: 105,
    key: 'A',
    scale: 'harmonicMinor',
    tags: ['phantom', 'riddle', 'enigma'],
    desc: 'Brooding harmonic minor theme with restless melodic questions',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.3, filter: 1600 },
    sections: {
      intro:   [4, 'i bII bVI V',     'sustained',  'pedal',       'none',      0.25],
      verse:   [8, 'i iv V bVI',       'chromatic',  'walking',     'sparse',    0.45],
      chorus:  [8, 'bVI bVII i bII',   'ostinato',   'root-fifth',  'half-time', 0.6],
      bridge:  [4, 'i v bVI bII',      'trill',      'chromatic',   'hats-only', 0.35],
      outro:   [4, 'i bII',            'fade',        'pedal',       'none',      0.15],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','verse','outro'],
  },
  {
    id: 'mysterious_003',
    name: 'Twilight Labyrinth',
    mood: 'Mysterious',
    energy: 3,
    tempo: 88,
    key: 'F#',
    scale: 'minor',
    tags: ['twilight', 'labyrinth', 'shadow'],
    desc: 'Winding minor key passages through dim corridors of sound',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.4, filter: 1000 },
    sections: {
      intro:   [4, 'i bVI bVII i',    'legato',     'pedal',       'none',      0.2],
      verse:   [8, 'i iv bVI V',       'stepwise',   'walking',     'sparse',    0.35],
      chorus:  [8, 'bVII bVI V i',     'chromatic',  'arpeggiated', 'half-time', 0.55],
      bridge:  [4, 'i bII iv bVI',     'trill',      'chromatic',   'tribal',    0.4],
      outro:   [4, 'i',                'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_004',
    name: 'Crypt Whispers',
    mood: 'Mysterious',
    energy: 2,
    tempo: 82,
    key: 'B',
    scale: 'phrygian',
    tags: ['crypt', 'whisper', 'eerie'],
    desc: 'Hushed phrygian murmurs echoing through ancient stone chambers',
    synths: { lead: 'AM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.7, delay: 0.45, filter: 800 },
    sections: {
      intro:   [4, 'i bII i bII',     'sustained',  'pedal',       'none',      0.15],
      verse:   [8, 'i bII iv i',       'legato',     'root',        'sparse',    0.3],
      chorus:  [8, 'bVI i bVII V',     'chromatic',  'walking',     'hats-only', 0.45],
      outro:   [4, 'i bII',            'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'mysterious_005',
    name: 'Fog of Enigma',
    mood: 'Mysterious',
    energy: 3,
    tempo: 100,
    key: 'E',
    scale: 'wholeTone',
    tags: ['fog', 'enigma', 'mystery'],
    desc: 'Drifting whole-tone haze obscuring all sense of harmonic direction',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.65, delay: 0.4, filter: 1400 },
    sections: {
      intro:   [4, 'i IV bVI bVII',   'sustained',  'pedal',       'none',      0.2],
      verse:   [8, 'i v bVI V',        'stepwise',   'arpeggiated', 'sparse',    0.4],
      chorus:  [8, 'i bII V i',        'ostinato',   'root-fifth',  'half-time', 0.55],
      bridge:  [4, 'bII i bVI V',      'chromatic',  'chromatic',   'hats-only', 0.35],
      outro:   [4, 'i',                'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_006',
    name: 'Spell Unraveled',
    mood: 'Mysterious',
    energy: 5,
    tempo: 115,
    key: 'G',
    scale: 'harmonicMinor',
    tags: ['spell', 'dark', 'haunt'],
    desc: 'Urgent harmonic minor incantation building to a feverish climax',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.45, delay: 0.25, filter: 2200 },
    sections: {
      intro:   [4, 'i v bII iv',      'trill',      'pedal',       'sparse',    0.3],
      verse:   [8, 'i bVI iv V',       'chromatic',  'driving',     'standard',  0.5],
      chorus:  [8, 'i bVII bVI V',     'leap',       'root-fifth',  'full',      0.7],
      bridge:  [4, 'i bII bVI V',      'ostinato',   'walking',     'half-time', 0.45],
      outro:   [4, 'i bII i',          'fade',        'pedal',       'sparse',    0.2],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_007',
    name: 'Void Gazer',
    mood: 'Mysterious',
    energy: 2,
    tempo: 84,
    key: 'C',
    scale: 'chromatic',
    tags: ['void', 'dark', 'eerie'],
    desc: 'Staring into the abyss with atonal fragments dissolving into silence',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.7, delay: 0.42, filter: 900 },
    sections: {
      intro:   [4, 'i',               'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'i bVI bVII i',    'chromatic',  'root',        'sparse',    0.3],
      chorus:  [8, 'i v bVI bII',     'legato',     'arpeggiated', 'hats-only', 0.4],
      bridge:  [4, 'bVI bVII i V',    'trill',      'chromatic',   'none',      0.25],
      outro:   [4, 'i',               'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','verse','outro'],
  },
  {
    id: 'mysterious_008',
    name: 'Detective Noir',
    mood: 'Mysterious',
    energy: 4,
    tempo: 108,
    key: 'C#',
    scale: 'minor',
    tags: ['detective', 'suspense', 'shadow'],
    desc: 'Smoky noir investigation theme with sly chromatic bass lines',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.45, delay: 0.3, filter: 1800 },
    sections: {
      intro:   [4, 'i bVII bVI V',    'stepwise',   'walking',     'sparse',    0.3],
      verse:   [8, 'i iv bVI V',       'chromatic',  'walking',     'shuffle',   0.5],
      chorus:  [8, 'i bII iv bVI',     'ostinato',   'root-fifth',  'standard',  0.6],
      bridge:  [4, 'bVI i bVII V',     'trill',      'chromatic',   'half-time', 0.4],
      outro:   [4, 'i bII i',          'fade',        'pedal',       'sparse',    0.2],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_009',
    name: 'Haunted Carousel',
    mood: 'Mysterious',
    energy: 4,
    tempo: 112,
    key: 'F',
    scale: 'phrygian',
    tags: ['haunt', 'eerie', 'puzzle'],
    desc: 'A broken carousel spinning in phrygian darkness with warped melodies',
    synths: { lead: 'Pluck', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.35, filter: 1500 },
    sections: {
      intro:   [4, 'i bII i bII',     'ostinato',   'pedal',       'waltz',     0.3],
      verse:   [8, 'i bVI iv V',       'stepwise',   'arpeggiated', 'waltz',     0.45],
      chorus:  [8, 'i bII bVI V',      'chromatic',  'root-fifth',  'standard',  0.6],
      bridge:  [4, 'iv V i bII',       'trill',      'walking',     'sparse',    0.35],
      outro:   [4, 'i bII',            'fade',        'pedal',       'waltz',     0.15],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_010',
    name: 'Riddle of Echoes',
    mood: 'Mysterious',
    energy: 3,
    tempo: 92,
    key: 'D#',
    scale: 'harmonicMinor',
    tags: ['riddle', 'enigma', 'whisper'],
    desc: 'Haunting call-and-response between shadowy melodic fragments',
    synths: { lead: 'AM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.4, filter: 1100 },
    sections: {
      intro:   [4, 'i',               'sustained',  'pedal',       'none',      0.15],
      verse:   [8, 'i bVI bVII i',    'legato',     'root',        'sparse',    0.35],
      chorus:  [8, 'i iv bII bVI',    'chromatic',  'walking',     'half-time', 0.5],
      bridge:  [4, 'bVI bVII i bII',  'trill',      'arpeggiated', 'tribal',    0.4],
      outro:   [4, 'i bII i',         'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','verse','outro'],
  },
  {
    id: 'mysterious_011',
    name: 'Obsidian Mirror',
    mood: 'Mysterious',
    energy: 3,
    tempo: 98,
    key: 'G#',
    scale: 'minor',
    tags: ['dark', 'mystery', 'shadow'],
    desc: 'Dark reflections shimmer in minor key with glassy sustained tones',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.55, delay: 0.35, filter: 1300 },
    sections: {
      intro:   [4, 'i bVI iv V',      'sustained',  'pedal',       'none',      0.2],
      verse:   [8, 'i v bVI V',       'stepwise',   'arpeggiated', 'sparse',    0.4],
      chorus:  [8, 'i bVII bVI V',    'chromatic',  'root-fifth',  'half-time', 0.55],
      bridge:  [4, 'i bII iv i',      'legato',     'chromatic',   'hats-only', 0.35],
      outro:   [4, 'i',               'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_012',
    name: 'Serpent Passage',
    mood: 'Mysterious',
    energy: 5,
    tempo: 118,
    key: 'A#',
    scale: 'phrygian',
    tags: ['suspense', 'dark', 'labyrinth'],
    desc: 'Slithering phrygian riff coiling through an underground labyrinth',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.25, filter: 2500 },
    sections: {
      intro:   [4, 'i bII i bII',     'ostinato',   'driving',     'sparse',    0.35],
      verse:   [8, 'i iv bVI V',      'chromatic',  'walking',     'standard',  0.55],
      chorus:  [8, 'i bII bVI V',     'leap',       'root-fifth',  'full',      0.7],
      bridge:  [4, 'i v bII iv',      'trill',      'chromatic',   'half-time', 0.45],
      outro:   [4, 'i bII',           'fade',        'pedal',       'sparse',    0.2],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','chorus','outro'],
  },
  {
    id: 'mysterious_013',
    name: 'Moonless Night',
    mood: 'Mysterious',
    energy: 2,
    tempo: 80,
    key: 'E',
    scale: 'wholeTone',
    tags: ['eerie', 'void', 'twilight'],
    desc: 'Formless whole-tone drifts under a starless sky with no resolution',
    synths: { lead: 'AM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.7, delay: 0.45, filter: 850 },
    sections: {
      intro:   [4, 'i',               'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'i bVI bVII i',    'legato',     'root',        'sparse',    0.25],
      chorus:  [8, 'i IV bVI bVII',   'chromatic',  'arpeggiated', 'hats-only', 0.4],
      outro:   [4, 'i',               'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'mysterious_014',
    name: "Specter's Descent",
    mood: 'Mysterious',
    energy: 4,
    tempo: 104,
    key: 'B',
    scale: 'harmonicMinor',
    tags: ['phantom', 'dark', 'haunt'],
    desc: 'Descending harmonic minor spiral pulling deeper into spectral depths',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.5, delay: 0.3, filter: 1700 },
    sections: {
      intro:   [4, 'i bII bVI V',     'descending', 'pedal',       'sparse',    0.25],
      verse:   [8, 'i iv V bVI',      'stepwise',   'walking',     'half-time', 0.45],
      chorus:  [8, 'bVI bVII i V',    'chromatic',  'root-fifth',  'standard',  0.6],
      bridge:  [4, 'i bVI iv V',      'trill',      'chromatic',   'tribal',    0.4],
      outro:   [4, 'i',               'fade',        'pedal',       'none',      0.15],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_015',
    name: 'Puzzle Chamber',
    mood: 'Mysterious',
    energy: 4,
    tempo: 110,
    key: 'F',
    scale: 'minor',
    tags: ['puzzle', 'mystery', 'riddle'],
    desc: 'Interlocking melodic puzzles clicking into place within stone walls',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.45, delay: 0.3, filter: 2000 },
    sections: {
      intro:   [4, 'i bII iv i',      'ostinato',   'root',        'sparse',    0.3],
      verse:   [8, 'i bVI bVII i',    'stepwise',   'walking',     'standard',  0.5],
      chorus:  [8, 'i v bVI bII',     'chromatic',  'arpeggiated', 'half-time', 0.6],
      bridge:  [4, 'i bII bVI V',     'trill',      'chromatic',   'hats-only', 0.4],
      outro:   [4, 'i bII i',         'fade',        'pedal',       'sparse',    0.2],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','chorus','outro'],
  },
  {
    id: 'mysterious_016',
    name: 'Veiled Threshold',
    mood: 'Mysterious',
    energy: 3,
    tempo: 90,
    key: 'C',
    scale: 'phrygian',
    tags: ['mystery', 'fog', 'twilight'],
    desc: 'Standing at the boundary between worlds in thick phrygian fog',
    synths: { lead: 'AM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.65, delay: 0.4, filter: 1050 },
    sections: {
      intro:   [4, 'i bII i bII',     'sustained',  'pedal',       'none',      0.15],
      verse:   [8, 'i bII iv bVI',    'legato',     'root',        'sparse',    0.35],
      chorus:  [8, 'i bVII bVI V',    'stepwise',   'walking',     'half-time', 0.5],
      bridge:  [4, 'bVI i bVII V',    'chromatic',  'arpeggiated', 'tribal',    0.4],
      outro:   [4, 'i',               'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_017',
    name: 'Waning Sigil',
    mood: 'Mysterious',
    energy: 3,
    tempo: 96,
    key: 'D',
    scale: 'harmonicMinor',
    tags: ['spell', 'enigma', 'crypt'],
    desc: 'A fading magical sigil pulsing with diminishing harmonic minor energy',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.55, delay: 0.35, filter: 1250 },
    sections: {
      intro:   [4, 'i bVI iv V',      'sustained',  'pedal',       'sparse',    0.2],
      verse:   [8, 'i bII V i',       'chromatic',  'walking',     'half-time', 0.4],
      chorus:  [8, 'i iv bVI V',      'ostinato',   'root-fifth',  'standard',  0.55],
      bridge:  [4, 'bVII bVI V i',    'trill',      'chromatic',   'hats-only', 0.35],
      outro:   [4, 'i bII',           'fade',        'pedal',       'none',      0.12],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','verse','outro'],
  },
  {
    id: 'mysterious_018',
    name: 'Forgotten Archive',
    mood: 'Mysterious',
    energy: 3,
    tempo: 94,
    key: 'G#',
    scale: 'chromatic',
    tags: ['mystery', 'puzzle', 'shadow'],
    desc: 'Dusty chromatic fragments unearthed from a lost archive of secrets',
    synths: { lead: 'AM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.6, delay: 0.38, filter: 1150 },
    sections: {
      intro:   [4, 'i bII iv i',      'chromatic',  'pedal',       'none',      0.2],
      verse:   [8, 'i bVI bVII i',    'stepwise',   'arpeggiated', 'sparse',    0.35],
      chorus:  [8, 'i v bVI V',       'legato',     'root-fifth',  'half-time', 0.5],
      bridge:  [4, 'i bII bVI V',     'trill',      'chromatic',   'waltz',     0.4],
      outro:   [4, 'i',               'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'mysterious_019',
    name: "Oracle's Warning",
    mood: 'Mysterious',
    energy: 5,
    tempo: 120,
    key: 'A',
    scale: 'minor',
    tags: ['suspense', 'dark', 'whisper'],
    desc: 'An urgent prophetic warning delivered in frantic minor key passages',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.2, filter: 2400 },
    sections: {
      intro:   [4, 'i bII i bII',     'ostinato',   'driving',     'sparse',    0.35],
      verse:   [8, 'i iv bII bVI',    'chromatic',  'walking',     'standard',  0.55],
      chorus:  [8, 'i bVI bVII i',    'leap',       'root-fifth',  'full',      0.7],
      bridge:  [4, 'bII i bVI V',     'trill',      'chromatic',   'half-time', 0.45],
      outro:   [4, 'i bII i',         'fade',        'pedal',       'sparse',    0.2],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','chorus','outro'],
  },
  {
    id: 'mysterious_020',
    name: 'Abyssal Lullaby',
    mood: 'Mysterious',
    energy: 2,
    tempo: 85,
    key: 'F#',
    scale: 'wholeTone',
    tags: ['void', 'eerie', 'twilight'],
    desc: 'A gentle yet deeply unsettling lullaby drifting over an endless abyss',
    synths: { lead: 'AM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.7, delay: 0.45, filter: 900 },
    sections: {
      intro:   [4, 'i',               'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'i IV bVI bVII',   'legato',     'root',        'sparse',    0.25],
      chorus:  [8, 'i bII iv i',      'stepwise',   'arpeggiated', 'waltz',     0.4],
      bridge:  [4, 'i bVI iv V',      'chromatic',  'chromatic',   'none',      0.3],
      outro:   [4, 'i',               'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','verse','outro'],
  },

  // ═══════════════════════════════════════════
  // HEROIC (20 songs) — heroic_001 to heroic_020
  // ═══════════════════════════════════════════
  {
    id: 'heroic_001',
    name: "Champion's Anthem",
    mood: 'Heroic',
    energy: 8,
    tempo: 145,
    key: 'C',
    scale: 'major',
    tags: ['hero', 'triumph', 'anthem'],
    desc: 'A soaring major key anthem celebrating the ultimate champion',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.15, filter: 4000 },
    sections: {
      intro:   [4, 'I V vi IV',       'fanfare',    'root-fifth',  'march',     0.5],
      verse:   [8, 'I vi IV V',       'ascending',  'driving',     'standard',  0.6],
      chorus:  [8, 'I V vi IV',       'leap',       'root-fifth',  'full',      0.85],
      bridge:  [4, 'vi IV I V',       'call-response','walking',   'half-time', 0.5],
      outro:   [4, 'I V I',           'fanfare',    'root-fifth',  'march',     0.7],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_002',
    name: 'Dawn of Valor',
    mood: 'Heroic',
    energy: 7,
    tempo: 138,
    key: 'G',
    scale: 'lydian',
    tags: ['dawn', 'valor', 'courage'],
    desc: 'Radiant lydian sunrise heralding a new era of bravery and valor',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.2, filter: 3500 },
    sections: {
      intro:   [4, 'I IV V V',        'ascending',  'octave',      'build',     0.4],
      verse:   [8, 'I iii IV V',      'pentatonic', 'driving',     'standard',  0.55],
      chorus:  [8, 'I V IV I',        'fanfare',    'root-fifth',  'full',      0.8],
      bridge:  [4, 'I ii IV V',       'call-response','walking',   'march',     0.5],
      outro:   [4, 'I IV I',          'legato',     'octave',      'standard',  0.6],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_003',
    name: 'Shield Bearer',
    mood: 'Heroic',
    energy: 7,
    tempo: 132,
    key: 'D',
    scale: 'mixolydian',
    tags: ['shield', 'brave', 'quest'],
    desc: 'Sturdy mixolydian march of a steadfast shield bearer on a noble quest',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.15, filter: 3800 },
    sections: {
      intro:   [4, 'I V vi ii',       'fanfare',    'root-fifth',  'march',     0.45],
      verse:   [8, 'I IV vi V',       'ascending',  'driving',     'standard',  0.55],
      chorus:  [8, 'IV V I I',        'leap',       'root-fifth',  'full',      0.75],
      bridge:  [4, 'I iii vi IV',     'pentatonic', 'arpeggiated', 'half-time', 0.45],
      outro:   [4, 'I V I',           'fanfare',    'octave',      'march',     0.65],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_004',
    name: 'Glory Unchained',
    mood: 'Heroic',
    energy: 9,
    tempo: 155,
    key: 'A',
    scale: 'major',
    tags: ['glory', 'triumph', 'champion'],
    desc: 'Explosive high-energy celebration of total victory and unchained glory',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.1, filter: 5000 },
    sections: {
      intro:   [4, 'I V IV vi',       'fanfare',    'driving',     'four-on-floor', 0.6],
      verse:   [8, 'I vi V IV',       'arp-up',     'driving',     'standard',  0.7],
      chorus:  [8, 'I V vi IV',       'leap',       'root-fifth',  'full',      0.9],
      bridge:  [4, 'vi IV V I',       'ascending',  'walking',     'build',     0.6],
      outro:   [4, 'I V I IV',        'fanfare',    'octave',      'four-on-floor', 0.8],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_005',
    name: 'Oath of the Paladin',
    mood: 'Heroic',
    energy: 7,
    tempo: 128,
    key: 'F',
    scale: 'dorian',
    tags: ['oath', 'paladin', 'courage'],
    desc: 'Solemn yet powerful dorian oath sworn by a noble paladin',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.2, filter: 3200 },
    sections: {
      intro:   [4, 'I ii V I',        'legato',     'root-fifth',  'half-time', 0.4],
      verse:   [8, 'I iii IV V',      'ascending',  'walking',     'standard',  0.55],
      chorus:  [8, 'I V I IV',        'fanfare',    'root-fifth',  'march',     0.75],
      bridge:  [4, 'I vi IV V',       'call-response','arpeggiated','build',    0.5],
      outro:   [4, 'I V I',           'legato',     'octave',      'march',     0.6],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_006',
    name: "Crusader's March",
    mood: 'Heroic',
    energy: 8,
    tempo: 142,
    key: 'E',
    scale: 'major',
    tags: ['crusade', 'hero', 'sword'],
    desc: 'Relentless marching rhythm driving a crusade forward to victory',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.15, filter: 4200 },
    sections: {
      intro:   [4, 'I IV V vi',       'fanfare',    'driving',     'march',     0.55],
      verse:   [8, 'I V vi ii',       'ascending',  'driving',     'standard',  0.65],
      chorus:  [8, 'IV V vi I',       'leap',       'root-fifth',  'full',      0.85],
      bridge:  [4, 'I iii IV V',      'pentatonic', 'walking',     'build',     0.5],
      outro:   [4, 'I V I',           'fanfare',    'octave',      'march',     0.7],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_007',
    name: 'Beacon of Hope',
    mood: 'Heroic',
    energy: 6,
    tempo: 125,
    key: 'B',
    scale: 'lydian',
    tags: ['beacon', 'hero', 'legend'],
    desc: 'A luminous lydian melody shining as a beacon through the darkness',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.2, filter: 3000 },
    sections: {
      intro:   [4, 'I iii IV I',      'ascending',  'root-fifth',  'half-time', 0.35],
      verse:   [8, 'I vi IV V',       'pentatonic', 'arpeggiated', 'standard',  0.5],
      chorus:  [8, 'I V IV vi',       'legato',     'root-fifth',  'full',      0.7],
      bridge:  [4, 'vi I IV V',       'call-response','walking',   'build',     0.45],
      outro:   [4, 'I IV I',          'ascending',  'octave',      'half-time', 0.5],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_008',
    name: 'Thunder Vanguard',
    mood: 'Heroic',
    energy: 9,
    tempo: 158,
    key: 'D#',
    scale: 'minor',
    tags: ['brave', 'quest', 'sword'],
    desc: 'Thunderous minor key charge of the vanguard into the heart of battle',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.12, filter: 4800 },
    sections: {
      intro:   [4, 'I V vi IV',       'fanfare',    'driving',     'four-on-floor', 0.6],
      verse:   [8, 'I IV V V',        'arp-up',     'driving',     'standard',  0.7],
      chorus:  [8, 'I vi IV V',       'leap',       'root-fifth',  'full',      0.9],
      bridge:  [4, 'IV I V vi',       'ascending',  'octave',      'build',     0.6],
      outro:   [4, 'I V I',           'fanfare',    'driving',     'four-on-floor', 0.8],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_009',
    name: 'Skyward Bound',
    mood: 'Heroic',
    energy: 7,
    tempo: 135,
    key: 'F#',
    scale: 'major',
    tags: ['adventure', 'glory', 'dawn'],
    desc: 'An uplifting ascent into the clouds with boundless major key optimism',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.18, filter: 3600 },
    sections: {
      intro:   [4, 'I IV V I',        'ascending',  'root-fifth',  'build',     0.4],
      verse:   [8, 'I ii IV V',       'arp-up',     'walking',     'standard',  0.55],
      chorus:  [8, 'I V vi IV',       'fanfare',    'root-fifth',  'full',      0.8],
      bridge:  [4, 'I iii vi IV',     'pentatonic', 'arpeggiated', 'half-time', 0.45],
      outro:   [4, 'I V I IV',        'legato',     'octave',      'standard',  0.6],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_010',
    name: 'Iron Resolve',
    mood: 'Heroic',
    energy: 8,
    tempo: 148,
    key: 'C#',
    scale: 'dorian',
    tags: ['champion', 'shield', 'valor'],
    desc: 'Unbreakable dorian determination with a hammering rhythmic backbone',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.28, delay: 0.12, filter: 4500 },
    sections: {
      intro:   [4, 'I vi IV V',       'fanfare',    'driving',     'march',     0.55],
      verse:   [8, 'I IV vi V',       'ascending',  'driving',     'four-on-floor', 0.65],
      chorus:  [8, 'I V I IV',        'leap',       'root-fifth',  'full',      0.85],
      bridge:  [4, 'I ii V I',        'call-response','walking',   'build',     0.5],
      outro:   [4, 'I V I',           'fanfare',    'octave',      'march',     0.7],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_011',
    name: 'Wingspan',
    mood: 'Heroic',
    energy: 6,
    tempo: 122,
    key: 'G#',
    scale: 'lydian',
    tags: ['adventure', 'hero', 'dawn'],
    desc: 'Soaring lydian theme evoking the spread of mighty wings at first light',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.22, filter: 3000 },
    sections: {
      intro:   [4, 'I iii IV V',      'ascending',  'arpeggiated', 'half-time', 0.35],
      verse:   [8, 'I IV V vi',       'pentatonic', 'walking',     'standard',  0.5],
      chorus:  [8, 'I vi V IV',       'legato',     'root-fifth',  'full',      0.7],
      bridge:  [4, 'I V IV I',        'call-response','arpeggiated','build',    0.45],
      outro:   [4, 'I IV I',          'ascending',  'octave',      'half-time', 0.5],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_012',
    name: "Legend's Forge",
    mood: 'Heroic',
    energy: 8,
    tempo: 150,
    key: 'A#',
    scale: 'minor',
    tags: ['legend', 'sword', 'crusade'],
    desc: 'White-hot minor key intensity of a legendary weapon being forged',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.1, filter: 4600 },
    sections: {
      intro:   [4, 'I V vi IV',       'fanfare',    'driving',     'four-on-floor', 0.55],
      verse:   [8, 'I V iv I',        'arp-up',     'driving',     'standard',  0.65],
      chorus:  [8, 'I iv V I',        'leap',       'root-fifth',  'full',      0.85],
      bridge:  [4, 'I vi IV V',       'ascending',  'octave',      'build',     0.55],
      outro:   [4, 'I V I',           'fanfare',    'driving',     'march',     0.7],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_013',
    name: 'Rally Cry',
    mood: 'Heroic',
    energy: 9,
    tempo: 160,
    key: 'D',
    scale: 'mixolydian',
    tags: ['triumph', 'anthem', 'glory'],
    desc: 'A deafening mixolydian rally cry uniting an army before the final charge',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.1, filter: 5000 },
    sections: {
      intro:   [4, 'I IV V V',        'fanfare',    'driving',     'march',     0.6],
      verse:   [8, 'I V vi IV',       'ascending',  'driving',     'four-on-floor', 0.7],
      chorus:  [8, 'I V IV I',        'leap',       'root-fifth',  'full',      0.9],
      bridge:  [4, 'I ii IV V',       'call-response','walking',   'build',     0.55],
      outro:   [4, 'I V I',           'fanfare',    'octave',      'four-on-floor', 0.85],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_014',
    name: 'Valor Rising',
    mood: 'Heroic',
    energy: 7,
    tempo: 130,
    key: 'F',
    scale: 'major',
    tags: ['valor', 'brave', 'quest'],
    desc: 'A steadily rising major key theme embodying growing courage',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.18, filter: 3400 },
    sections: {
      intro:   [4, 'I iii IV V',      'ascending',  'root-fifth',  'build',     0.35],
      verse:   [8, 'I IV V vi',       'arp-up',     'walking',     'standard',  0.5],
      chorus:  [8, 'I vi IV V',       'fanfare',    'root-fifth',  'full',      0.75],
      bridge:  [4, 'I V IV vi',       'pentatonic', 'arpeggiated', 'half-time', 0.45],
      outro:   [4, 'I IV I',          'legato',     'octave',      'standard',  0.6],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_015',
    name: 'Fortress Eternal',
    mood: 'Heroic',
    energy: 7,
    tempo: 136,
    key: 'B',
    scale: 'dorian',
    tags: ['shield', 'paladin', 'oath'],
    desc: 'Impenetrable dorian fortress theme with layered harmonic defenses',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.15, filter: 3800 },
    sections: {
      intro:   [4, 'I V vi ii',       'fanfare',    'root-fifth',  'march',     0.45],
      verse:   [8, 'I ii IV V',       'ascending',  'driving',     'standard',  0.6],
      chorus:  [8, 'I vi V IV',       'leap',       'root-fifth',  'full',      0.8],
      bridge:  [4, 'IV V I I',        'call-response','walking',   'build',     0.5],
      outro:   [4, 'I V I',           'fanfare',    'octave',      'march',     0.65],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_016',
    name: "Phoenix's Flight",
    mood: 'Heroic',
    energy: 8,
    tempo: 146,
    key: 'E',
    scale: 'lydian',
    tags: ['hero', 'legend', 'dawn'],
    desc: 'Blazing lydian ascent of a reborn phoenix soaring above the flames',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.3, delay: 0.15, filter: 4400 },
    sections: {
      intro:   [4, 'I IV V I',        'fanfare',    'driving',     'four-on-floor', 0.55],
      verse:   [8, 'I iii vi IV',     'ascending',  'driving',     'standard',  0.65],
      chorus:  [8, 'I V vi IV',       'leap',       'root-fifth',  'full',      0.85],
      bridge:  [4, 'I vi IV V',       'arp-up',     'arpeggiated', 'build',     0.5],
      outro:   [4, 'I V I',           'ascending',  'octave',      'four-on-floor', 0.75],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_017',
    name: 'Banner Unfurled',
    mood: 'Heroic',
    energy: 7,
    tempo: 134,
    key: 'G',
    scale: 'major',
    tags: ['glory', 'courage', 'champion'],
    desc: 'Majestic unfurling of a victorious banner in crisp major key splendor',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.35, delay: 0.2, filter: 3600 },
    sections: {
      intro:   [4, 'I V I IV',        'fanfare',    'root-fifth',  'march',     0.45],
      verse:   [8, 'I vi IV V',       'pentatonic', 'walking',     'standard',  0.55],
      chorus:  [8, 'I IV V vi',       'ascending',  'root-fifth',  'full',      0.75],
      bridge:  [4, 'I iii IV V',      'legato',     'arpeggiated', 'half-time', 0.45],
      outro:   [4, 'I V I',           'fanfare',    'octave',      'march',     0.65],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_018',
    name: 'Dragonslayer',
    mood: 'Heroic',
    energy: 9,
    tempo: 156,
    key: 'C#',
    scale: 'minor',
    tags: ['sword', 'brave', 'quest'],
    desc: 'Ferocious minor key battle theme of a legendary dragonslayer',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.1, filter: 4900 },
    sections: {
      intro:   [4, 'I V vi IV',       'fanfare',    'driving',     'four-on-floor', 0.65],
      verse:   [8, 'I iv V I',        'arp-up',     'driving',     'standard',  0.75],
      chorus:  [8, 'I V iv I',        'leap',       'root-fifth',  'full',      0.9],
      bridge:  [4, 'I vi IV V',       'ascending',  'walking',     'build',     0.55],
      outro:   [4, 'I V I',           'fanfare',    'octave',      'four-on-floor', 0.8],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_019',
    name: 'Crowning Moment',
    mood: 'Heroic',
    energy: 6,
    tempo: 120,
    key: 'A#',
    scale: 'major',
    tags: ['triumph', 'anthem', 'glory'],
    desc: 'A stately coronation theme building to an emotional crowning climax',
    synths: { lead: 'Poly', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.22, filter: 2800 },
    sections: {
      intro:   [4, 'I iii IV V',      'legato',     'root-fifth',  'half-time', 0.35],
      verse:   [8, 'I vi V IV',       'ascending',  'arpeggiated', 'standard',  0.5],
      chorus:  [8, 'I IV V I',        'fanfare',    'root-fifth',  'full',      0.7],
      bridge:  [4, 'I V IV vi',       'call-response','walking',   'build',     0.45],
      outro:   [4, 'I IV I',          'legato',     'octave',      'standard',  0.55],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'heroic_020',
    name: 'Eternal Vow',
    mood: 'Heroic',
    energy: 6,
    tempo: 126,
    key: 'F#',
    scale: 'mixolydian',
    tags: ['oath', 'paladin', 'beacon'],
    desc: 'A profound mixolydian pledge of eternal service and unwavering loyalty',
    synths: { lead: 'FM', pad: 'Poly', bass: 'Mono' },
    fx: { reverb: 0.4, delay: 0.2, filter: 3200 },
    sections: {
      intro:   [4, 'I vi IV V',       'legato',     'root-fifth',  'half-time', 0.35],
      verse:   [8, 'I iii IV V',      'pentatonic', 'walking',     'standard',  0.5],
      chorus:  [8, 'I vi V IV',       'ascending',  'root-fifth',  'full',      0.7],
      bridge:  [4, 'I ii IV V',       'call-response','arpeggiated','build',    0.45],
      outro:   [4, 'I V I',           'fanfare',    'octave',      'march',     0.55],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },

  // ═══════════════════════════════════════════
  // QUIRKY (20 songs) — quirky_001 to quirky_020
  // ═══════════════════════════════════════════
  {
    id: 'quirky_001',
    name: 'Wobble Walk',
    mood: 'Quirky',
    energy: 6,
    tempo: 118,
    key: 'C',
    scale: 'mixolydian',
    tags: ['wobble', 'funny', 'offbeat'],
    desc: 'A tipsy mixolydian stroll with syncopated bass and bouncy staccato hits',
    synths: { lead: 'FM', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.2, delay: 0.15, filter: 3000 },
    sections: {
      intro:   [4, 'I bVII IV I',     'staccato',   'syncopated',  'shuffle',   0.4],
      verse:   [8, 'I bVII I IV',     'blues',      'walking',     'standard',  0.55],
      chorus:  [8, 'I bVII IV V',     'arp-bounce', 'octave',      'breakbeat', 0.7],
      bridge:  [4, 'bVII IV V I',     'trill',      'syncopated',  'waltz',     0.45],
      outro:   [4, 'I bVII I',        'staccato',   'fifths',      'shuffle',   0.35],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_002',
    name: 'Glitch Parade',
    mood: 'Quirky',
    energy: 7,
    tempo: 128,
    key: 'F',
    scale: 'blues',
    tags: ['glitch', 'weird', 'surprise'],
    desc: 'A malfunctioning parade of blues riffs and unexpected rhythmic hiccups',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.15, delay: 0.2, filter: 2800 },
    sections: {
      intro:   [4, 'I III IV bVII',   'blues',      'syncopated',  'breakbeat', 0.45],
      verse:   [8, 'I bVII IV V',     'staccato',   'walking',     'shuffle',   0.55],
      chorus:  [8, 'I III bVII IV',   'arp-bounce', 'octave',      'standard',  0.7],
      bridge:  [4, 'bIII I IV V',     'chromatic',  'syncopated',  'double-time',0.5],
      outro:   [4, 'I bVII I',        'random',     'fifths',      'breakbeat', 0.4],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_003',
    name: 'Mischief Maker',
    mood: 'Quirky',
    energy: 6,
    tempo: 112,
    key: 'D',
    scale: 'dorian',
    tags: ['mischief', 'prank', 'eccentric'],
    desc: 'Sneaky dorian theme of a trickster plotting delightful chaos',
    synths: { lead: 'FM', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.2, delay: 0.18, filter: 2500 },
    sections: {
      intro:   [4, 'I bIII IV V',     'staccato',   'syncopated',  'shuffle',   0.35],
      verse:   [8, 'I IV bIII bVII',  'chromatic',  'walking',     'standard',  0.5],
      chorus:  [8, 'bVII IV I V',     'arp-bounce', 'arpeggiated', 'breakbeat', 0.65],
      bridge:  [4, 'I bVII bIII IV',  'trill',      'octave',      'waltz',     0.4],
      outro:   [4, 'I bIII I',        'staccato',   'syncopated',  'shuffle',   0.3],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_004',
    name: 'Rubber Duck Boogie',
    mood: 'Quirky',
    energy: 7,
    tempo: 132,
    key: 'A',
    scale: 'pentatonicMinor',
    tags: ['funny', 'bounce', 'comedy'],
    desc: 'Absurd pentatonic boogie with squeaky lead lines and rubber bass',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.18, delay: 0.12, filter: 3500 },
    sections: {
      intro:   [4, 'bVII IV I V',     'blues',      'syncopated',  'shuffle',   0.45],
      verse:   [8, 'I bVII IV I',     'staccato',   'walking',     'standard',  0.6],
      chorus:  [8, 'I IV bVII IV',    'arp-bounce', 'octave',      'double-time',0.75],
      bridge:  [4, 'I V bVII IV',     'random',     'fifths',      'breakbeat', 0.5],
      outro:   [4, 'I bVII I',        'blues',      'syncopated',  'shuffle',   0.4],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_005',
    name: 'Clockwork Confusion',
    mood: 'Quirky',
    energy: 5,
    tempo: 108,
    key: 'G',
    scale: 'wholeTone',
    tags: ['odd', 'twist', 'eccentric'],
    desc: 'Malfunctioning clockwork mechanism ticking in whole-tone disorientation',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.25, filter: 2200 },
    sections: {
      intro:   [4, 'I bVII I IV',     'ostinato',   'syncopated',  'march',     0.35],
      verse:   [8, 'I bVII IV V',     'chromatic',  'walking',     'standard',  0.5],
      chorus:  [8, 'I V bVII IV',     'staccato',   'arpeggiated', 'shuffle',   0.6],
      bridge:  [4, 'bVII I IV bIII',  'trill',      'octave',      'breakbeat', 0.45],
      outro:   [4, 'I bVII I',        'ostinato',   'syncopated',  'march',     0.3],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_006',
    name: 'Prankster Polka',
    mood: 'Quirky',
    energy: 7,
    tempo: 135,
    key: 'E',
    scale: 'mixolydian',
    tags: ['prank', 'wacky', 'clown'],
    desc: 'A manic polka-inspired romp driven by wacky syncopation and flat-seven swagger',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.15, delay: 0.1, filter: 3800 },
    sections: {
      intro:   [4, 'I III IV bVII',   'staccato',   'octave',      'march',     0.45],
      verse:   [8, 'I bVII bIII IV',  'blues',      'syncopated',  'shuffle',   0.6],
      chorus:  [8, 'bIII IV I bVII',  'arp-bounce', 'walking',     'double-time',0.75],
      bridge:  [4, 'I bVII V bIII',   'chromatic',  'fifths',      'waltz',     0.45],
      outro:   [4, 'I bVII I',        'staccato',   'octave',      'march',     0.4],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_007',
    name: 'Jellybean Jamboree',
    mood: 'Quirky',
    energy: 8,
    tempo: 140,
    key: 'B',
    scale: 'lydian',
    tags: ['bounce', 'zany', 'comedy'],
    desc: 'Sugary lydian explosion of color and bouncing melodic candy',
    synths: { lead: 'FM', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.2, delay: 0.15, filter: 4000 },
    sections: {
      intro:   [4, 'I bVII IV I',     'arp-bounce', 'syncopated',  'four-on-floor', 0.5],
      verse:   [8, 'I V bVII bIII',   'staccato',   'walking',     'standard',  0.6],
      chorus:  [8, 'I III bVII IV',   'random',     'octave',      'double-time',0.8],
      bridge:  [4, 'bVII IV V I',     'trill',      'arpeggiated', 'breakbeat', 0.55],
      outro:   [4, 'I bVII I',        'arp-bounce', 'syncopated',  'four-on-floor', 0.45],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_008',
    name: 'Sneaky Squirrel',
    mood: 'Quirky',
    energy: 5,
    tempo: 105,
    key: 'D#',
    scale: 'dorian',
    tags: ['mischief', 'trick', 'offbeat'],
    desc: 'Furtive dorian scurrying with darting staccato leads and syncopated bass',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.2, filter: 2400 },
    sections: {
      intro:   [4, 'I bIII IV V',     'staccato',   'syncopated',  'shuffle',   0.3],
      verse:   [8, 'I bVII IV V',     'chromatic',  'walking',     'standard',  0.45],
      chorus:  [8, 'I bVII bIII IV',  'ostinato',   'arpeggiated', 'breakbeat', 0.6],
      bridge:  [4, 'IV I bVII V',     'trill',      'fifths',      'waltz',     0.4],
      outro:   [4, 'I bIII I',        'staccato',   'syncopated',  'shuffle',   0.25],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_009',
    name: 'Topsy Turvy',
    mood: 'Quirky',
    energy: 6,
    tempo: 120,
    key: 'F#',
    scale: 'blues',
    tags: ['chaos', 'twist', 'wacky'],
    desc: 'Everything flipped upside down in a chaotic blues-scale adventure',
    synths: { lead: 'FM', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.22, delay: 0.18, filter: 2800 },
    sections: {
      intro:   [4, 'I bVII IV I',     'blues',      'syncopated',  'breakbeat', 0.4],
      verse:   [8, 'I bIII bVII IV',  'staccato',   'walking',     'shuffle',   0.55],
      chorus:  [8, 'bVII I IV bIII',  'arp-bounce', 'octave',      'standard',  0.7],
      bridge:  [4, 'I V bVII bIII',   'random',     'fifths',      'double-time',0.5],
      outro:   [4, 'I bVII I',        'blues',      'syncopated',  'breakbeat', 0.35],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_010',
    name: 'Noodle Soup',
    mood: 'Quirky',
    energy: 5,
    tempo: 102,
    key: 'C#',
    scale: 'pentatonicMinor',
    tags: ['weird', 'odd', 'eccentric'],
    desc: 'A winding noodly pentatonic melody sloshing around in rhythmic broth',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.22, filter: 2000 },
    sections: {
      intro:   [4, 'I bVII I IV',     'chromatic',  'syncopated',  'shuffle',   0.3],
      verse:   [8, 'I IV bVII IV',    'blues',      'walking',     'standard',  0.45],
      chorus:  [8, 'I bVII IV V',     'arp-bounce', 'arpeggiated', 'waltz',     0.6],
      bridge:  [4, 'bVII IV I V',     'ostinato',   'octave',      'breakbeat', 0.4],
      outro:   [4, 'I bVII I',        'chromatic',  'syncopated',  'shuffle',   0.25],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_011',
    name: 'Pixel Pandemonium',
    mood: 'Quirky',
    energy: 8,
    tempo: 138,
    key: 'G#',
    scale: 'mixolydian',
    tags: ['glitch', 'chaos', 'surprise'],
    desc: 'Hyper 8-bit style mixolydian mayhem with frantic arpeggio bursts',
    synths: { lead: 'FM', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.15, delay: 0.12, filter: 3600 },
    sections: {
      intro:   [4, 'I bVII IV V',     'arp-bounce', 'syncopated',  'four-on-floor', 0.5],
      verse:   [8, 'I V bVII IV',     'staccato',   'driving',     'standard',  0.65],
      chorus:  [8, 'I III IV bVII',   'rhythmic',   'octave',      'double-time',0.8],
      bridge:  [4, 'bIII I IV V',     'trill',      'walking',     'breakbeat', 0.55],
      outro:   [4, 'I bVII I',        'arp-bounce', 'syncopated',  'four-on-floor', 0.45],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_012',
    name: 'Banana Peel Slide',
    mood: 'Quirky',
    energy: 6,
    tempo: 116,
    key: 'A#',
    scale: 'blues',
    tags: ['funny', 'clown', 'comedy'],
    desc: 'Slippery blues-scale comedy with pratfall rhythms and slide-whistle leads',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.15, filter: 2600 },
    sections: {
      intro:   [4, 'I bVII bIII IV',  'blues',      'syncopated',  'shuffle',   0.4],
      verse:   [8, 'I bIII bVII IV',  'staccato',   'walking',     'standard',  0.5],
      chorus:  [8, 'I IV bVII IV',    'arp-bounce', 'arpeggiated', 'breakbeat', 0.65],
      bridge:  [4, 'bVII I IV bIII',  'chromatic',  'fifths',      'waltz',     0.4],
      outro:   [4, 'I bVII I',        'blues',      'syncopated',  'shuffle',   0.3],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_013',
    name: 'Funhouse Mirror',
    mood: 'Quirky',
    energy: 5,
    tempo: 110,
    key: 'E',
    scale: 'wholeTone',
    tags: ['twist', 'odd', 'eccentric'],
    desc: 'Distorted whole-tone reflections warping reality in a carnival funhouse',
    synths: { lead: 'FM', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.3, delay: 0.28, filter: 2000 },
    sections: {
      intro:   [4, 'I bVII IV I',     'ostinato',   'syncopated',  'waltz',     0.3],
      verse:   [8, 'I V bVII bIII',   'chromatic',  'walking',     'shuffle',   0.45],
      chorus:  [8, 'I bVII V bIII',   'staccato',   'arpeggiated', 'standard',  0.6],
      bridge:  [4, 'bIII IV I bVII',  'trill',      'octave',      'breakbeat', 0.45],
      outro:   [4, 'I bVII I',        'ostinato',   'syncopated',  'waltz',     0.25],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_014',
    name: 'Hiccup Hop',
    mood: 'Quirky',
    energy: 7,
    tempo: 126,
    key: 'D',
    scale: 'dorian',
    tags: ['bounce', 'wacky', 'zany'],
    desc: 'Jerky dorian hop interrupted by melodic hiccups and rhythmic stumbles',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.18, delay: 0.15, filter: 3200 },
    sections: {
      intro:   [4, 'I bIII IV V',     'staccato',   'syncopated',  'breakbeat', 0.45],
      verse:   [8, 'I bVII bIII IV',  'rhythmic',   'walking',     'standard',  0.55],
      chorus:  [8, 'I V bVII IV',     'arp-bounce', 'octave',      'double-time',0.7],
      bridge:  [4, 'bVII IV I V',     'random',     'fifths',      'shuffle',   0.45],
      outro:   [4, 'I bIII I',        'staccato',   'syncopated',  'breakbeat', 0.35],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_015',
    name: 'Zigzag Zephyr',
    mood: 'Quirky',
    energy: 6,
    tempo: 122,
    key: 'B',
    scale: 'lydian',
    tags: ['surprise', 'offbeat', 'mischief'],
    desc: 'Unpredictable lydian wind gusts pushing melodies in zigzag directions',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.22, delay: 0.2, filter: 2800 },
    sections: {
      intro:   [4, 'I bVII I IV',     'arp-bounce', 'arpeggiated', 'shuffle',   0.35],
      verse:   [8, 'I III bVII IV',   'staccato',   'walking',     'standard',  0.5],
      chorus:  [8, 'I bVII IV V',     'chromatic',  'syncopated',  'breakbeat', 0.65],
      bridge:  [4, 'IV bVII I V',     'trill',      'octave',      'march',     0.4],
      outro:   [4, 'I bVII I',        'arp-bounce', 'arpeggiated', 'shuffle',   0.3],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_016',
    name: 'Rubber Band Riff',
    mood: 'Quirky',
    energy: 6,
    tempo: 114,
    key: 'F',
    scale: 'pentatonicMinor',
    tags: ['wobble', 'trick', 'comedy'],
    desc: 'Stretchy pentatonic riffs snapping back and forth with elastic energy',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.2, delay: 0.18, filter: 2600 },
    sections: {
      intro:   [4, 'I bVII IV I',     'blues',      'syncopated',  'shuffle',   0.35],
      verse:   [8, 'I bIII bVII IV',  'staccato',   'walking',     'standard',  0.5],
      chorus:  [8, 'bVII I IV bIII',  'arp-bounce', 'octave',      'breakbeat', 0.65],
      bridge:  [4, 'I bVII V bIII',   'random',     'fifths',      'waltz',     0.4],
      outro:   [4, 'I bVII I',        'blues',      'syncopated',  'shuffle',   0.3],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_017',
    name: 'Carousel Malfunction',
    mood: 'Quirky',
    energy: 7,
    tempo: 130,
    key: 'G',
    scale: 'mixolydian',
    tags: ['chaos', 'glitch', 'wacky'],
    desc: 'A malfunctioning fairground ride spinning at odd intervals in mixolydian frenzy',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.2, delay: 0.15, filter: 3200 },
    sections: {
      intro:   [4, 'I III IV bVII',   'ostinato',   'syncopated',  'waltz',     0.4],
      verse:   [8, 'I bVII I IV',     'chromatic',  'walking',     'shuffle',   0.55],
      chorus:  [8, 'I bVII bIII IV',  'staccato',   'octave',      'double-time',0.7],
      bridge:  [4, 'bIII I IV V',     'trill',      'arpeggiated', 'breakbeat', 0.5],
      outro:   [4, 'I bVII I',        'ostinato',   'syncopated',  'waltz',     0.35],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_018',
    name: 'Jester Jig',
    mood: 'Quirky',
    energy: 7,
    tempo: 136,
    key: 'A',
    scale: 'dorian',
    tags: ['clown', 'prank', 'zany'],
    desc: 'A flamboyant dorian jig performed by a mischievous court jester',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.15, delay: 0.12, filter: 3400 },
    sections: {
      intro:   [4, 'I bIII IV V',     'staccato',   'syncopated',  'march',     0.45],
      verse:   [8, 'I bVII IV V',     'rhythmic',   'walking',     'standard',  0.6],
      chorus:  [8, 'I V bVII bIII',   'arp-bounce', 'octave',      'double-time',0.75],
      bridge:  [4, 'bVII IV V I',     'blues',      'fifths',      'shuffle',   0.5],
      outro:   [4, 'I bIII I',        'staccato',   'syncopated',  'march',     0.35],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_019',
    name: 'Slapstick Serenade',
    mood: 'Quirky',
    energy: 5,
    tempo: 100,
    key: 'C#',
    scale: 'blues',
    tags: ['funny', 'comedy', 'twist'],
    desc: 'A tender serenade gone hilariously wrong with slapstick timing and blue notes',
    synths: { lead: 'FM', pad: 'AM', bass: 'Mono' },
    fx: { reverb: 0.25, delay: 0.2, filter: 1800 },
    sections: {
      intro:   [4, 'I bVII I IV',     'blues',      'syncopated',  'waltz',     0.3],
      verse:   [8, 'I IV bVII IV',    'staccato',   'walking',     'shuffle',   0.45],
      chorus:  [8, 'I bVII IV V',     'arp-bounce', 'arpeggiated', 'standard',  0.6],
      bridge:  [4, 'bVII IV I V',     'chromatic',  'octave',      'breakbeat', 0.4],
      outro:   [4, 'I bVII I',        'blues',      'syncopated',  'waltz',     0.25],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },
  {
    id: 'quirky_020',
    name: 'Kaleidoscope Caper',
    mood: 'Quirky',
    energy: 6,
    tempo: 124,
    key: 'D#',
    scale: 'lydian',
    tags: ['surprise', 'eccentric', 'wobble'],
    desc: 'Shifting lydian patterns like a kaleidoscope of musical fragments',
    synths: { lead: 'Pluck', pad: 'AM', bass: 'Pluck' },
    fx: { reverb: 0.22, delay: 0.2, filter: 2600 },
    sections: {
      intro:   [4, 'I bVII IV I',     'arp-bounce', 'syncopated',  'breakbeat', 0.35],
      verse:   [8, 'I III bVII IV',   'staccato',   'walking',     'standard',  0.5],
      chorus:  [8, 'I bVII V bIII',   'random',     'octave',      'shuffle',   0.65],
      bridge:  [4, 'bIII IV I bVII',  'trill',      'arpeggiated', 'march',     0.4],
      outro:   [4, 'I bVII I',        'arp-bounce', 'fifths',      'breakbeat', 0.3],
    },
    form: ['intro','verse','chorus','verse','chorus','bridge','chorus','outro'],
  },

  // ═══════════════════════════════════════════
  // AMBIENT (20 songs) — ambient_001 to ambient_020
  // ═══════════════════════════════════════════
  {
    id: 'ambient_001',
    name: 'Nebula Drift',
    mood: 'Ambient',
    energy: 2,
    tempo: 68,
    key: 'C',
    scale: 'major',
    tags: ['space', 'cosmic', 'floating'],
    desc: 'Weightless major key pads drifting through a colorful cosmic nebula',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.75, delay: 0.45, filter: 800 },
    sections: {
      intro:   [4, 'I V',             'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'I IV V I',        'legato',     'root',        'sparse',    0.2],
      chorus:  [8, 'I vi IV I',       'pentatonic', 'arpeggiated', 'hats-only', 0.3],
      outro:   [4, 'I IV',            'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_002',
    name: 'Crystal Meadow',
    mood: 'Ambient',
    energy: 2,
    tempo: 72,
    key: 'G',
    scale: 'pentatonicMajor',
    tags: ['crystal', 'meadow', 'tranquil'],
    desc: 'Sparkling pentatonic chimes scattered across a sunlit meadow',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.7, delay: 0.4, filter: 1000 },
    sections: {
      intro:   [4, 'I IV',            'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'I iii IV I',      'pentatonic', 'root',        'sparse',    0.2],
      chorus:  [8, 'I V IV I',        'arp-down',   'arpeggiated', 'hats-only', 0.3],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_003',
    name: 'Glacial Horizon',
    mood: 'Ambient',
    energy: 1,
    tempo: 62,
    key: 'D',
    scale: 'lydian',
    tags: ['glacier', 'vast', 'ethereal'],
    desc: 'Immense glacial soundscape stretching to an infinite lydian horizon',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.8, delay: 0.5, filter: 600 },
    sections: {
      intro:   [4, 'I V',             'sustained',  'pedal',       'none',      0.05],
      verse:   [8, 'I IV vi ii',      'legato',     'root',        'none',      0.15],
      chorus:  [8, 'I iii vi IV',     'sustained',  'arpeggiated', 'sparse',    0.2],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.05],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_004',
    name: 'Aurora Veil',
    mood: 'Ambient',
    energy: 2,
    tempo: 75,
    key: 'A',
    scale: 'pentatonicMajor',
    tags: ['aurora', 'ethereal', 'dream'],
    desc: 'Shimmering aurora borealis painted in pentatonic washes of light',
    synths: { lead: 'FM', pad: 'AM', bass: 'AM' },
    fx: { reverb: 0.7, delay: 0.42, filter: 950 },
    sections: {
      intro:   [4, 'I iii',           'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'I vi IV I',       'pentatonic', 'root',        'sparse',    0.2],
      chorus:  [8, 'IV I vi I',       'arp-down',   'arpeggiated', 'hats-only', 0.28],
      outro:   [4, 'I IV',            'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_005',
    name: 'Tidal Murmur',
    mood: 'Ambient',
    energy: 2,
    tempo: 66,
    key: 'F',
    scale: 'minor',
    tags: ['tide', 'mist', 'tranquil'],
    desc: 'Gentle minor key tides lapping rhythmically in a misty coastal haze',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.75, delay: 0.45, filter: 750 },
    sections: {
      intro:   [4, 'vi IV',           'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'vi IV I V',       'legato',     'root',        'sparse',    0.2],
      chorus:  [8, 'I vi ii IV',      'stepwise',   'arpeggiated', 'none',      0.25],
      outro:   [4, 'vi I',            'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_006',
    name: 'Stardust Canopy',
    mood: 'Ambient',
    energy: 1,
    tempo: 60,
    key: 'B',
    scale: 'major',
    tags: ['stardust', 'cosmic', 'vast'],
    desc: 'An endless canopy of stars rendered in slow-moving major key pads',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.8, delay: 0.5, filter: 550 },
    sections: {
      intro:   [4, 'I vi',            'sustained',  'pedal',       'none',      0.05],
      verse:   [8, 'I ii IV I',       'legato',     'root',        'none',      0.12],
      chorus:  [8, 'IV vi I V',       'pentatonic', 'arpeggiated', 'sparse',    0.18],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.05],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_007',
    name: 'Silk River',
    mood: 'Ambient',
    energy: 2,
    tempo: 70,
    key: 'E',
    scale: 'pentatonicMinor',
    tags: ['floating', 'dream', 'tranquil'],
    desc: 'Smooth pentatonic minor currents flowing like liquid silk through space',
    synths: { lead: 'FM', pad: 'AM', bass: 'AM' },
    fx: { reverb: 0.7, delay: 0.4, filter: 900 },
    sections: {
      intro:   [4, 'I IV',            'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'I iii IV I',      'pentatonic', 'root',        'sparse',    0.2],
      chorus:  [8, 'I V IV I',        'arp-down',   'arpeggiated', 'hats-only', 0.28],
      bridge:  [4, 'I vi',            'legato',     'pedal',       'none',      0.15],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','verse','outro'],
  },
  {
    id: 'ambient_008',
    name: 'Morning Dew',
    mood: 'Ambient',
    energy: 2,
    tempo: 76,
    key: 'D#',
    scale: 'lydian',
    tags: ['meadow', 'crystal', 'atmosphere'],
    desc: 'Dewdrops catching first light in shimmering lydian bell tones',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.65, delay: 0.38, filter: 1200 },
    sections: {
      intro:   [4, 'I V',             'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'I IV V I',        'arp-down',   'root',        'sparse',    0.2],
      chorus:  [8, 'I vi IV I',       'pentatonic', 'arpeggiated', 'hats-only', 0.28],
      outro:   [4, 'I iii',           'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_009',
    name: 'Deep Cavern Echo',
    mood: 'Ambient',
    energy: 1,
    tempo: 64,
    key: 'F#',
    scale: 'minor',
    tags: ['void', 'vast', 'atmosphere'],
    desc: 'Cavernous minor key echoes bouncing endlessly through underground spaces',
    synths: { lead: 'AM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.8, delay: 0.5, filter: 500 },
    sections: {
      intro:   [4, 'vi I',            'sustained',  'pedal',       'none',      0.05],
      verse:   [8, 'vi IV I V',       'legato',     'root',        'none',      0.15],
      chorus:  [8, 'I vi ii IV',      'sustained',  'arpeggiated', 'sparse',    0.2],
      outro:   [4, 'vi',              'fade',        'pedal',       'none',      0.05],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_010',
    name: 'Velvet Cosmos',
    mood: 'Ambient',
    energy: 2,
    tempo: 74,
    key: 'C#',
    scale: 'wholeTone',
    tags: ['cosmic', 'nebula', 'floating'],
    desc: 'Luxurious whole-tone textures unfolding across a velvet cosmic canvas',
    synths: { lead: 'FM', pad: 'AM', bass: 'AM' },
    fx: { reverb: 0.75, delay: 0.45, filter: 850 },
    sections: {
      intro:   [4, 'I IV',            'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'I iii vi IV',     'legato',     'root',        'sparse',    0.18],
      chorus:  [8, 'I IV vi ii',      'pentatonic', 'arpeggiated', 'hats-only', 0.25],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_011',
    name: 'Feather Fall',
    mood: 'Ambient',
    energy: 1,
    tempo: 63,
    key: 'G#',
    scale: 'pentatonicMajor',
    tags: ['ethereal', 'dream', 'floating'],
    desc: 'Weightless pentatonic notes falling like feathers through still air',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.78, delay: 0.48, filter: 650 },
    sections: {
      intro:   [4, 'I iii',           'sustained',  'pedal',       'none',      0.05],
      verse:   [8, 'I IV V I',        'arp-down',   'root',        'none',      0.12],
      chorus:  [8, 'I vi IV I',       'pentatonic', 'arpeggiated', 'sparse',    0.18],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.05],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_012',
    name: 'Horizon Glow',
    mood: 'Ambient',
    energy: 3,
    tempo: 82,
    key: 'A#',
    scale: 'major',
    tags: ['horizon', 'aurora', 'tranquil'],
    desc: 'Warm major key glow spreading across a peaceful distant horizon',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.6, delay: 0.35, filter: 1400 },
    sections: {
      intro:   [4, 'I V',             'sustained',  'pedal',       'none',      0.12],
      verse:   [8, 'I vi IV V',       'legato',     'root',        'sparse',    0.22],
      chorus:  [8, 'I iii IV I',      'stepwise',   'arpeggiated', 'half-time', 0.32],
      bridge:  [4, 'I vi ii IV',      'pentatonic', 'pedal',       'sparse',    0.2],
      outro:   [4, 'I IV I',          'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','outro'],
  },
  {
    id: 'ambient_013',
    name: 'Moss Garden',
    mood: 'Ambient',
    energy: 2,
    tempo: 69,
    key: 'D',
    scale: 'pentatonicMinor',
    tags: ['meadow', 'mist', 'tranquil'],
    desc: 'A damp moss garden where pentatonic tones grow like delicate plants',
    synths: { lead: 'AM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.72, delay: 0.42, filter: 800 },
    sections: {
      intro:   [4, 'I ii',            'sustained',  'pedal',       'none',      0.08],
      verse:   [8, 'I iii IV I',      'pentatonic', 'root',        'sparse',    0.18],
      chorus:  [8, 'I V IV I',        'arp-down',   'arpeggiated', 'none',      0.25],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.06],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_014',
    name: 'Solar Wind',
    mood: 'Ambient',
    energy: 2,
    tempo: 78,
    key: 'F',
    scale: 'lydian',
    tags: ['space', 'cosmic', 'vast'],
    desc: 'Streams of lydian particles carried by an invisible solar wind',
    synths: { lead: 'FM', pad: 'AM', bass: 'AM' },
    fx: { reverb: 0.68, delay: 0.4, filter: 1050 },
    sections: {
      intro:   [4, 'I IV',            'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'I ii IV I',       'legato',     'root',        'sparse',    0.2],
      chorus:  [8, 'I iii vi IV',     'arp-down',   'arpeggiated', 'hats-only', 0.28],
      outro:   [4, 'I iii',           'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_015',
    name: 'Moonpool Reflection',
    mood: 'Ambient',
    energy: 1,
    tempo: 61,
    key: 'B',
    scale: 'minor',
    tags: ['dream', 'mist', 'ethereal'],
    desc: 'Perfectly still moonlit pool reflecting minor key pads in mirrored silence',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.8, delay: 0.48, filter: 550 },
    sections: {
      intro:   [4, 'vi I',            'sustained',  'pedal',       'none',      0.05],
      verse:   [8, 'I vi IV I',       'legato',     'root',        'none',      0.12],
      chorus:  [8, 'I iii IV I',      'sustained',  'arpeggiated', 'sparse',    0.18],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.05],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_016',
    name: 'Ember Glow',
    mood: 'Ambient',
    energy: 3,
    tempo: 85,
    key: 'E',
    scale: 'pentatonicMajor',
    tags: ['atmosphere', 'tranquil', 'meadow'],
    desc: 'Warm dying embers casting a pentatonic glow across a quiet room',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.6, delay: 0.35, filter: 1500 },
    sections: {
      intro:   [4, 'I V',             'sustained',  'pedal',       'none',      0.12],
      verse:   [8, 'I IV V I',        'pentatonic', 'root',        'sparse',    0.22],
      chorus:  [8, 'I vi ii IV',      'legato',     'arpeggiated', 'half-time', 0.3],
      bridge:  [4, 'I iii IV I',      'stepwise',   'pedal',       'sparse',    0.2],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.1],
    },
    form: ['intro','verse','chorus','verse','bridge','chorus','outro'],
  },
  {
    id: 'ambient_017',
    name: 'Cloud Temple',
    mood: 'Ambient',
    energy: 2,
    tempo: 71,
    key: 'A',
    scale: 'lydian',
    tags: ['floating', 'ethereal', 'vast'],
    desc: 'An ancient temple floating among the clouds in shimmering lydian suspension',
    synths: { lead: 'AM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.75, delay: 0.45, filter: 850 },
    sections: {
      intro:   [4, 'I iii',           'sustained',  'pedal',       'none',      0.08],
      verse:   [8, 'I IV vi ii',      'arp-down',   'root',        'sparse',    0.18],
      chorus:  [8, 'I V IV I',        'pentatonic', 'arpeggiated', 'hats-only', 0.25],
      outro:   [4, 'I IV',            'fade',        'pedal',       'none',      0.06],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_018',
    name: 'Frozen Bloom',
    mood: 'Ambient',
    energy: 1,
    tempo: 65,
    key: 'G',
    scale: 'wholeTone',
    tags: ['glacier', 'crystal', 'void'],
    desc: 'Ice crystals blooming in slow motion with directionless whole-tone shimmer',
    synths: { lead: 'FM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.78, delay: 0.48, filter: 600 },
    sections: {
      intro:   [4, 'I',               'sustained',  'pedal',       'none',      0.05],
      verse:   [8, 'I vi IV V',       'legato',     'root',        'none',      0.12],
      chorus:  [8, 'I iii IV I',      'sustained',  'arpeggiated', 'sparse',    0.18],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.05],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_019',
    name: 'Whispering Sands',
    mood: 'Ambient',
    energy: 2,
    tempo: 73,
    key: 'C#',
    scale: 'pentatonicMinor',
    tags: ['tide', 'mist', 'atmosphere'],
    desc: 'Desert sands whispering pentatonic secrets carried on a warm breeze',
    synths: { lead: 'FM', pad: 'AM', bass: 'AM' },
    fx: { reverb: 0.7, delay: 0.4, filter: 900 },
    sections: {
      intro:   [4, 'I IV',            'sustained',  'pedal',       'none',      0.1],
      verse:   [8, 'vi I IV V',       'pentatonic', 'root',        'sparse',    0.2],
      chorus:  [8, 'I vi IV I',       'arp-down',   'arpeggiated', 'hats-only', 0.28],
      outro:   [4, 'I',               'fade',        'pedal',       'none',      0.08],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  {
    id: 'ambient_020',
    name: 'Infinite Stillness',
    mood: 'Ambient',
    energy: 1,
    tempo: 60,
    key: 'F#',
    scale: 'major',
    tags: ['void', 'stardust', 'vast'],
    desc: 'Absolute stillness at the edge of the universe where sound barely exists',
    synths: { lead: 'AM', pad: 'Poly', bass: 'AM' },
    fx: { reverb: 0.8, delay: 0.5, filter: 500 },
    sections: {
      intro:   [4, 'I',               'silence',    'pedal',       'none',      0.03],
      verse:   [8, 'I V',             'sustained',  'root',        'none',      0.1],
      chorus:  [8, 'I IV',            'legato',     'arpeggiated', 'sparse',    0.15],
      outro:   [4, 'I',               'fade',        'silence',     'none',      0.03],
    },
    form: ['intro','verse','chorus','verse','chorus','verse','chorus','outro'],
  },
  ];

  // ─── Public API ────────────────────────────────────────────

  window.MusicLibrary = {
    /** All song definition objects */
    songs: songs,

    /** Total number of songs */
    count: songs.length,

    /** Get all songs for a given mood */
    getSongsByMood: function(mood) {
      return songs.filter(function(s) {
        return s.mood && s.mood.toLowerCase() === mood.toLowerCase();
      });
    },

    /** Get a song by ID */
    getSong: function(id) {
      for (var i = 0; i < songs.length; i++) {
        if (songs[i].id === id) return songs[i];
      }
      return null;
    },

    /** Get all unique mood names */
    getMoods: function() {
      var seen = {};
      return songs.reduce(function(acc, s) {
        if (s.mood && !seen[s.mood]) { seen[s.mood] = true; acc.push(s.mood); }
        return acc;
      }, []);
    },
  };

})();