{
  "prompt": "Genre: Mandopop / R&B Ballad; BPM: 140; Key: Eb Major; Rhythm: Relaxed half-time groove with a gentle backbeat on sidestick snare, sparse kick drum, and soft 16th-note hi-hats; Instruments: Nylon string guitar (main arpeggios), clean electric guitar (melodic fills), warm fretless-style bass, soft live drum kit (sidestick), and lush orchestral strings; Vocals: Male tenor, clear and smooth with a conversational delivery. Intimate and present, with clean reverb and subtle breathiness; Mood: Finding an old mixtape in a dusty box on a rainy afternoon, the quiet hum of the past filling the room; Production: High-fidelity studio polish with analogue warmth. Wide, natural stereo image. Vocals are centered and intimate. Smooth compression and lush reverb tails; Language: Mandarin; Highlight: The sudden shift from singing to a rhythmic spoken-word bridge, where the vocal timbre changes completely, delivering the core metaphor over the established gentle groove.",
  "lyrics": "[intro]\n(Chords: Eb - Ab - Eb - Bb)\n(Inst: Nylon string guitar plays a gentle, arpeggiated motif. A high, delicate bell sound accents the melody. Intimate and nostalgic feel.)\n(Vocal-Perf: Instrumental)\n(Mix: Narrow stereo field, focused on the guitar.)\n\n[verse]\n(Chords: Eb - Bb/D - Cm - Gm - Ab - Eb/G - Fm - Bb)\n(Inst: Bass enters with a smooth, melodic line. Soft drum kit with sidestick snare provides a gentle backbeat. Nylon guitar continues.)\n(Vocal-Perf: Conversational and soft chest voice, mezzo-piano dynamic. Clear, upfront delivery.)\n(Mix: Vocals centered, instruments creating a warm, intimate space around them.)\n爱像是一场小雨淅沥沥淅沥沥\n滴入我回忆\n爱又像一场旅行走停停走停停\n忽然遇见你\n停下了足迹\n\n[pre-chorus]\n(Chords: Ab - Bb - Gm - Cm - Ab - Bb)\n(Inst: Subtle electric guitar swells appear. Bass becomes more active, leading into the chorus. A slight dynamic build.)\n(Vocal-Perf: Melody ascends slightly, building tension. Tone remains gentle but with more intent.)\n(Transition: Drums play a simple fill on the last beat.)\n是否还是不太喜欢吃香菜\n到现在都没改\n那双原来最喜欢的匡威鞋带\n现在却解不开\n\n[chorus]\n(Chords: Ab - Bb - Gm - Cm - Ab - Bb - Eb)\n(Inst: Lush orchestral strings enter, providing a wide, emotional pad. Drums become slightly more defined, but still gentle. The full arrangement is present.)\n(Vocal-Perf: Mezzo-forte dynamic, more sustained notes and controlled vibrato. Voice feels more open and emotive.)\n(Mix: Stereo field widens significantly with the strings. Vocals sit comfortably in the full mix.)\n那张磁带一再一再它又再一次的卡带\n却还会再一遍一遍一遍又一遍听下来\n昨天的爱 已回不来\n却依然在心里徘徊\n却依然在心底徘徊\n\n[verse 2]\n(Chords: Eb - Bb/D - Cm - Gm - Ab - Bb)\n(Inst: Arrangement pulls back slightly, similar to the first verse/pre-chorus but with lingering string textures.)\n(Vocal-Perf: Returns to a more conversational, intimate delivery, contrasting with the previous chorus.)\n爱又像一场旅行走停停走停停\n忽然遇见你\n停下了足迹\n是否还是不太喜欢吃香菜\n到现在都没改\n那双原来最喜欢的匡威鞋带\n现在却解不开\n\n[bridge]\n(Chords: Ab - Bb - Gm - Cm)\n(Inst: Strings become more rhythmic, playing pizzicato or short stabs. Drums and bass provide a steady, minimal groove. Nylon guitar is sparse.)\n(Vocal-Perf: A sudden shift to rhythmic spoken-word, almost a gentle rap. Tone is narrative and direct, a stark contrast to the melodic singing.)\n(Mix: Vocals are dry and upfront, emphasizing the textural shift.)\n凶手和恋人都喜欢事后回现场\n看一看自己从前到底有多疯狂\n回忆里充满着罗曼蒂克的幻想\n那张磁带里藏着过往\n播放了就会回到现场\n\n[chorus]\n(Chords: Ab - Bb - Gm - Cm - Ab - Bb - Eb)\n(Inst: The fullest and most dynamic arrangement. Strings swell with soaring counter-melodies. Electric guitar adds more prominent fills. Drums are at their most present.)\n(Vocal-Perf: The most powerful and emotional delivery, forte dynamic. Sustained high notes with expressive vibrato.)\n(Mix: Maximum width and depth. The emotional climax of the song.)\n那张磁带一再一再它又再一次的卡带\n却还会再一遍一遍一遍又一遍听下来\n昨天的爱 已回不来\n却依然在心里徘徊\n却依然在心底徘徊\n\n[outro]\n(Chords: Eb - Ab - Eb - Bb - Eb)\n(Inst: Instruments fade out one by one, leaving the nylon string guitar and fading strings. The opening bell motif returns.)\n(Vocal-Perf: Instrumental)\n(Mix: A slow fade to silence, leaving the reverb tail of the final string chord.)\n(Transition: Decrescendo to silence.)",
  "song_id": "03_恋人_20260512",
  "_meta": {
    "provider": "google",
    "model": "gemini-2.5-pro",
    "usage": {
      "prompt_tokens": 12341,
      "completion_tokens": 1284,
      "total_tokens": 16284
    },
    "generated_at": "2026-05-12T15:21:39.309425+08:00"
  }
}