[
  {
    "title": "Nebula Bloom",
    "genre": "electronic",
    "mood": "uplifting",
    "tempo": 118,
    "key": "A",
    "scale": "minor",
    "primaryInstruments": ["analog polysynth", "modular bass", "sparkling arps", "punchy drums"],
    "arrangement": [
      { "section": "intro", "length": 8, "notes": "Filtered pad swell with gentle noise riser" },
      { "section": "build", "length": 16, "notes": "Arpeggios bloom with syncopated bass" },
      { "section": "drop", "length": 32, "notes": "Full drum kit enters with layered leads" },
      { "section": "break", "length": 16, "notes": "Chord breakdown with vocal chops" },
      { "section": "outro", "length": 8, "notes": "Delay tails and vinyl crackle fade" }
    ],
    "production": {
      "mix": ["Sidechain pads to kick", "Add 2 dB shelf at 12 kHz on leads", "Glue compressor on drum bus"],
      "automation": ["Filter cutoff ramp in build", "Reverb decay bloom on breakdown", "Master limiter release eased for outro"]
    },
    "performance": {
      "expressive": "Mod wheel vibrato on lead in drop",
      "spotlight": "Bass fills every fourth bar of drop"
    }
  },
  {
    "title": "Midnight Ledger",
    "genre": "jazz",
    "mood": "contemplative",
    "tempo": 82,
    "key": "F",
    "scale": "dorian",
    "primaryInstruments": ["upright bass", "brush kit", "felt piano", "saxophone"],
    "arrangement": [
      { "section": "head", "length": 16, "notes": "Piano outlines progression, sax states motif" },
      { "section": "solo", "length": 24, "notes": "Trading fours between sax and piano" },
      { "section": "bass feature", "length": 12, "notes": "Walking bass with subtle piano comps" },
      { "section": "recap", "length": 16, "notes": "Return to head with soft dynamics" }
    ],
    "production": {
      "mix": ["Warm tape saturation on master", "Spot mic the bass around bridge", "High-pass sax at 150 Hz"],
      "automation": ["Ride cymbal shimmer slowly widening", "Piano reverb send increasing in recap"]
    },
    "performance": {
      "expressive": "Dynamic swells accent late phrases",
      "spotlight": "Sax falls off into airy subtone for outro"
    }
  },
  {
    "title": "Glass Garden",
    "genre": "ambient",
    "mood": "peaceful",
    "tempo": 64,
    "key": "C",
    "scale": "lydian",
    "primaryInstruments": ["granular texture", "soft bells", "slow strings", "breathing drone"],
    "arrangement": [
      { "section": "opening", "length": 24, "notes": "Drone introduces tonal center with subtle field recordings" },
      { "section": "expansion", "length": 32, "notes": "Bell motif floats over filtered noise" },
      { "section": "dissolve", "length": 16, "notes": "Reverse swells and tape echos wash out" }
    ],
    "production": {
      "mix": ["Use mid-side widening on bells", "HPF all textures at 40 Hz", "Parallel shimmer reverb on strings"],
      "automation": ["Drone volume breathes with 16-bar cycle", "Slow pan drift for bells"]
    },
    "performance": {
      "expressive": "Evolving mod depth controlled via expression pedal",
      "spotlight": "Granular bloom on bar 12 of expansion"
    }
  },
  {
    "title": "Voltage Runway",
    "genre": "synthwave",
    "mood": "energetic",
    "tempo": 126,
    "key": "D",
    "scale": "aeolian",
    "primaryInstruments": ["fm bass", "gated pad", "digital lead", "retro drums"],
    "arrangement": [
      { "section": "intro", "length": 8, "notes": "Noise sweep into half-time drums" },
      { "section": "verse", "length": 16, "notes": "Chugging bass with gated pad stabs" },
      { "section": "chorus", "length": 16, "notes": "Bright poly lead with octave doubles" },
      { "section": "solo", "length": 12, "notes": "FM lead run with pitch bends" },
      { "section": "finale", "length": 12, "notes": "Double-time drums and stacked chords" }
    ],
    "production": {
      "mix": ["Bus compress drums 4:1 slow attack", "Add stereo widener on pads", "Saturate bass with tape sim"],
      "automation": ["Increase drive on solo", "Master tilt EQ rising 1 dB above 8 kHz in finale"]
    },
    "performance": {
      "expressive": "Lead vibrato triggered by aftertouch",
      "spotlight": "Drum fill into finale using tom flams"
    }
  },
  {
    "title": "Solstice Cantus",
    "genre": "classical",
    "mood": "uplifting",
    "tempo": 96,
    "key": "G",
    "scale": "mixolydian",
    "primaryInstruments": ["string ensemble", "woodwinds", "french horns", "concert harp"],
    "arrangement": [
      { "section": "overture", "length": 16, "notes": "Arpeggiated harp with strings in divisi" },
      { "section": "development", "length": 32, "notes": "Counterpoint between winds and violas" },
      { "section": "climax", "length": 24, "notes": "Horn fanfare layered over full strings" },
      { "section": "coda", "length": 12, "notes": "Return to motif in pizzicato" }
    ],
    "production": {
      "mix": ["Decca tree room with light hall reverb", "Spot mic horns for presence", "Glue strings with gentle compression"],
      "automation": ["Swelling horns in climax", "Slow fade of winds in coda"]
    },
    "performance": {
      "expressive": "Rubato push into climax",
      "spotlight": "Solo flute countermelody bars 8-12"
    }
  },
  {
    "title": "Chromatic Drift",
    "genre": "techno",
    "mood": "driving",
    "tempo": 128,
    "key": "B",
    "scale": "phrygian",
    "primaryInstruments": ["kick-synced bass", "percussive plucks", "noisy hi-hats", "atmospheric pad"],
    "arrangement": [
      { "section": "foundation", "length": 16, "notes": "Kick and bass lock with sparse hats" },
      { "section": "tension", "length": 16, "notes": "Plucks filtered with rising resonance" },
      { "section": "release", "length": 32, "notes": "Full percussion + pad swells" },
      { "section": "reset", "length": 8, "notes": "Bass solo with FX" }
    ],
    "production": {
      "mix": ["Parallel compression on drum bus", "Notch 300 Hz in pad", "Transient shape hats"],
      "automation": ["Filter opening 8 bars before release", "Delay feedback burst during reset"]
    },
    "performance": {
      "expressive": "Bass accent triggered by velocity above 110",
      "spotlight": "Reversed clap fill at transition into release"
    }
  }
]