{
  "prompt": "Genre: Mandopop / Synth-Pop / R&B; BPM: 128; Key: F# major; Rhythm: Syncopated synth-pop groove; 16th-note hi-hats; clap on 2 & 4; quantized, on-the-grid feel; Instruments: Punchy electronic drums, smooth sub-bass, detuned sawtooth pads, plucky high-arp lead, atmospheric pads, various FX risers; Vocals: Male tenor, clear and light timbre; breathy verses, open chorus; heavily tuned, compressed, with delay and reverb; Melody: Ascending arch in chorus, peaks mid-phrase; stepwise motion; phrases start on upbeat, land on downbeat; Mood: Driving through a neon-lit city tunnel at night, windows down, feeling an exhilarating rush of new love; Production: High-fidelity polish, smooth high-end; wide stereo synths, centered vocals; sidechain compression on pads; Language: Chinese; Highlight: The downbeat of the first chorus, where the full kick and wide sawtooth synth pads erupt after a tense, filtered pre-chorus build.",
  "lyrics": "[intro]\n(Mix: High-fidelity, radio-ready polish. Wide stereo field created by synth pads and arps. Tight, centered kick and sub-bass. Prominent delay/reverb on vocal chops. Sidechain compression on pads from kick creates a pumping feel.)\n(Inst: Punchy synth-pop drum machine, deep sub-bass, filtered sawtooth chord stabs, high-frequency plucky arp melody, FX risers, processed vocal chops.)\n(Hook-DNA: Rhythmic pattern is a syncopated quarter-eighth-eighth on synth chords; anchors on the tonic; motif repeats with rising filter cutoff.)\n(Melody-Contour: Ascending line, peaks mid-phrase, resolves on tonic; on-the-beat sustained notes.)\n(Chords: F#maj7 - C#maj7 - D#m7 - Bmaj7)\n一想到你就没有任何不适的感觉\n未来的每一天\n都多爱你一遍\nI'm thinking about you\nI'm thinking about you\n\n(Transition: Reverse cymbal swell and filter sweep down, drums drop to just kick and hi-hats.)\n[verse]\n(Inst: Bassline becomes more prominent, synth pads are softer and held longer. Drums are simplified.)\n(Vocal-Perf: Breathy, soft chest voice, conversational delivery, mezzo-piano.)\n(Melody-Contour: Narrow range, stepwise motion; phrases land on tonic; speech-rhythm, on-the-beat.)\n(Chords: F#maj7 - C#maj7 - D#m7 - Bmaj7)\n弥漫的烟\n散不出留在房间\n我在窗前\n捧着书本和茶点\n我总是失望对于自己和明天\n灯光下的微点\n又晃了我的眼\n\n(Transition: Light drum fill and a subtle riser build energy.)\n[pre-chorus]\n(Mix: Stereo field widens slightly; vocal delay becomes more audible.)\n(Inst: Clap returns, synth arp re-enters quietly in the background.)\n(Vocal-Perf: Intensity builds slightly, more open chest voice, mezzo-forte.)\n(Melody-Contour: Stepwise ascending line; phrases end unresolved on upper neighbor; short pickups.)\n(Chords: G#m7 - C#7sus4 - C#7)\n耳机播放着鼓点\n保持我们初见时的新鲜\n找个舒适的距间\n可我的性拾总让我感觉亏欠\n\n(Transition: All instruments cut out for one beat except for a pad swell.)\n[bridge]\n(Inst: Only sustained synth pads and bass, drums are minimal.)\n(Vocal-Perf: Softer, more contemplative tone, higher register.)\n(Melody-Contour: Higher register, sustained notes; phrases build tension.)\n(Melody-Harmonic-Tension: Melody holds the 2nd over the V chord (C#7), withholding resolution until the chorus.)\n(Chords: Bmaj7 - C#7sus4 - C#7)\n不确定的地点和一个待定的时间\n我怎么也会走进一场未知的沦陷\n\n(Transition: Fast drum fill and riser leading directly into the downbeat.)\n[chorus]\n(Mix: Full dynamic range, widest stereo image. Vocals layered with harmonies.)\n(Inst: Full drum kit, driving sub-bass, main sawtooth synth chords, prominent high arp melody.)\n(Vocal-Perf: Full open chest voice, forte, controlled vibrato on sustained notes.)\n(Melody-Contour: Ascending arch, peaks mid-phrase on \"每一天\"; stepwise descent to tonic.)\n(Melody-Harmonic-Tension: Melody peaks on the 5th over the IV chord (Bmaj7), creating a bright, uplifting tension before resolving down.)\n(Hook-Recall: Main synth chord rhythm from the intro returns, reinforcing the core hook.)\n(Chords: F#maj7 - C#maj7 - D#m7 - Bmaj7)\n一想到你就没有任何不适的感觉\n未来的每一天\n都多爱你一遍\n\n(Transition: Beat drops out, leaving synth arp and vocal chop reverb tail.)\n[interlude]\n(Inst: Instrumental section featuring the main synth arp melody and processed vocal chops over the chorus chord progression. Filter sweeps add movement.)\n(Melody-Contour: N/A (instrumental).)\n(Chords: F#maj7 - C#maj7 - D#m7 - Bmaj7)\nI'm thinking about you\nI'm thinking about you\n\n(Transition: Riser and drum fill build back into the full arrangement.)\n[chorus]\n(Mix: Added vocal ad-libs for intensity.)\n(Inst: Full instrumentation, additional counter-melody synth.)\n(Vocal-Perf: Most powerful delivery, ad-libs in upper register.)\n(Melody-Contour: Ascending arch, peaks mid-phrase on \"每一天\"; stepwise descent to tonic.)\n(Melody-Harmonic-Tension: Melody peaks on the 5th over the IV chord (Bmaj7), creating a bright, uplifting tension before resolving down.)\n(Hook-Recall: Main synth chord rhythm from the intro returns, reinforcing the core hook.)\n(Chords: F#maj7 - C#maj7 - D#m7 - Bmaj7)\n一想到你就没有任何不适的感觉\n未来的每一天\n都多爱你一遍\n\n(Transition: Abrupt cut of most instruments, leaving a filtered beat and vocal echo.)\n[outro]\n(Mix: Instruments are filtered out gradually, leaving only the vocal chops and reverb tails.)\n(Inst: Main synth arp plays a final time and fades out with a low-pass filter. A final vocal chop echoes into silence.)\n(Melody-Contour: N/A (instrumental).)\n(Chords: F#maj7)\nI'm thinking about you\nI'm thinking about you",
  "song_id": "01_Đắm Chìm (沦陷)_20260716",
  "_meta": {
    "provider": "google",
    "model": "gemini-2.5-pro",
    "usage": {
      "prompt_tokens": 10364,
      "completion_tokens": 1615,
      "total_tokens": 17208
    },
    "generated_at": "2026-07-16T17:00:30.312384+08:00"
  }
}