{
  "prompt": "Genre: Eurodance / Italo House; BPM: 128; Key: Bb major, with a brief shift to a iii-V-I-vi progression in the C-section; Feel: Straight-16th four-on-the-floor groove, tightly quantized, with a driving, syncopated 16th-note bassline; Instruments: Drum Mach. (rhythmic foundation, TR-909 style kick, sharp digital snare, tight 16th-note hi-hats), FM Synth Bass (driving rhythmic ostinato, classic plucky DX7 timbre), Digital Synth Stabs (off-beat chordal rhythm, bright brassy FM patch), Arpeggiated Synth (melodic counterpoint, bubbly and fast decay), Synth Pad (harmonic background, shimmering and airy), Breathy Synth Lead (main melody, airy 'vocal' sample-like timbre); Lead: FM Bass: A-section/Interlude; Breathy Synth Lead: B-section/C-section/Climax; Highlight: The relentless, syncopated FM bassline and off-beat brassy chord stabs creating a powerful, driving rhythmic engine.",
  "lyrics": "[Intro]\n(Chords: Implied Bbmaj7)\n(Harmonic-Rhythm: Static)\n(Lead: FM Synth Bass)\n(Inst: Drum Machine kick/hats, FM Synth Bass ostinato)\n(Dynamics: mf)\n(Transition: Snare fill enters)\n\n[A-section]\n(Chords: Bbmaj7 - Gm7 - Cm7 - Fsus4 - F)\n(Harmonic-Rhythm: One chord per bar)\n(Lead: Groove-focused, no melody)\n(Inst: Full Drum Machine, FM Bass, off-beat Digital Synth Stabs, airy Synth Pad)\n(Dynamics: f)\n(Transition: Synth riser)\n\n[B-section]\n(Chords: Bbmaj7 - Gm7 - Cm7 - Fsus4 - F)\n(Harmonic-Rhythm: One chord per bar)\n(Lead: Breathy Synth Lead)\n(Inst: Full A-section ensemble + Breathy Synth Lead and Arpeggiated Synth)\n(Dynamics: f)\n(Melody-Contour: Soaring, simple melodic arches)\n(Transition: Lead and arp drop out)\n\n[Interlude]\n(Chords: Bbmaj7 - Gm7 - Cm7 - Fsus4 - F)\n(Harmonic-Rhythm: One chord per bar)\n(Lead: None, groove focus)\n(Inst: Reduced texture - Drums, Bass, Synth Stabs only)\n(Dynamics: mf)\n(Texture: Sparse rhythmic breakdown)\n(Transition: Synth filter sweep up)\n\n[B-section]\n(Chords: Bbmaj7 - Gm7 - Cm7 - Fsus4 - F)\n(Harmonic-Rhythm: One chord per bar)\n(Lead: Breathy Synth Lead)\n(Inst: Full ensemble returns, melody repeats with slight variations, building intensity)\n(Dynamics: f to ff)\n(Transition: Bassline shifts to C-section progression)\n\n[C-section]\n(Chords: Dm7 - C - Bbmaj7 - Gm7)\n(Harmonic-Rhythm: One chord per bar)\n(Lead: Breathy Synth Lead plays a new, more melancholic melody)\n(Inst: Texture thins slightly, synth stabs change to follow new chords)\n(Dynamics: f)\n(Melody-Contour: More stepwise and reflective)\n(Transition: Drum fill and riser build back to climax)\n\n[Climax]\n(Chords: Bbmaj7 - Gm7 - Cm7 - Fsus4 - F)\n(Harmonic-Rhythm: One chord per bar)\n(Lead: Breathy Synth Lead with main theme)\n(Inst: Full ensemble, maximum energy, crash cymbal on beat 1 of each phrase)\n(Dynamics: ff)\n(Texture: Densest section)\n(Transition: Low-pass filter starts to close)\n\n[Outro]\n(Chords: Bbmaj7 fading out)\n(Harmonic-Rhythm: Static)\n(Lead: None)\n(Inst: Elements are gradually filtered out and fade away, ending on beat)\n(Dynamics: ff to pp)\n(Mix: Low-pass filter sweep closes down the high end)",
  "song_id": "02_Utopia_20260725",
  "_meta": {
    "provider": "google",
    "model": "gemini-2.5-pro",
    "usage": {
      "prompt_tokens": 8133,
      "completion_tokens": 1115,
      "total_tokens": 14806
    },
    "generated_at": "2026-07-27T19:00:45.708547+08:00"
  },
  "_prompt_compressed": {
    "from": 1459,
    "to": 884
  }
}