{
  "prompt": "Genre: Anime Pop-Rock Ballad; BPM: 132; Key: F Major; Rhythm: Half-time pop-rock groove in verses, building to an anthemic 8th-note rock backbeat in choruses.; Instruments: Grand piano (arpeggios/chords), punchy acoustic drums, clean electric bass, layered strings (pads/swells), and subtle overdriven electric guitars.; Vocals: Female, clear, emotive, and breathy voice with a youthful timbre. Gentle verses rise to a powerful, soaring belt in the chorus with controlled vibrato.; Mood: Watching home movies on a dusty projector, the light's warmth mixing with the chill of an empty room.; Production: Polished cinematic mix with high-fidelity clarity and analogue warmth. Vocals upfront in lush reverb.; Language: Chinese; Highlight: The sudden explosion of the full rock band and orchestra on the downbeat of the final chorus, following the intimate and questioning piano-vocal bridge.",
  "lyrics": "[intro]\n(Chords: Dm - Bb - F - C)\n(Inst: Solo grand piano playing a gentle, arpeggiated motif. Sets a reflective tone.)\n(Mix: Intimate, narrow stereo field, focused on the piano.)\n\n[verse]\n(Chords: Dm - Bb - F - C)\n(Vocal-Perf: Soft, breathy, mezzo-piano delivery. Conversational rhythm.)\n(Inst: Piano continues as main support. A soft string pad enters.)\n(Transition: A simple piano chord hangs before the pre-chorus.)\nWhen I was young and lost\nYou showed up, and had my doors unlocked\nLike threads, petals unfold\nA red kawara-nadeshiko\n\n[pre-chorus]\n(Chords: Gm - C - Am - Dm - Gm - C)\n(Vocal-Perf: Volume and intensity begin to build. Clearer, more sustained notes.)\n(Inst: Strings swell. Bass enters with simple root notes. Light cymbal taps introduce rhythm.)\n(Transition: Cymbal swell and a simple drum fill leads into the chorus.)\nYou have shown me that I am still capable of caring for someone else\nThat I still bare the same innocence inside\n\n[chorus]\n(Chords: F - C - Dm - Bb)\n(Vocal-Perf: Powerful, soaring mezzo-forte chest voice. Emotional emphasis on key words.)\n(Inst: Full band enters. Driving acoustic drums with a clear backbeat, bass provides a solid foundation, strings play a grand, sweeping melody.)\n(Mix: Wide stereo image. Vocals sit powerfully in the center.)\n(Sound-Design: The whole arrangement blooms, creating an epic, cinematic feel.)\nCause now I know that\nPain cannot define the past\nWe are built to overcome endless mishaps\nYou know, it is not so bad\nWhen you are with me\nCherish as long as we last\nCause S is not for sayonara\nLet memories play back\n\n[verse]\n(Chords: Dm - Bb - F - C)\n(Vocal-Perf: Returns to a softer, more narrative tone, but with more confidence than the first verse.)\n(Inst: The energy pulls back to piano, bass, and a simpler drum beat. Strings hold long, gentle notes.)\n(Transition: The final line is sung with a slight pause, leading into the bridge's emotional shift.)\nI knew I must step up\nYou deserve the world and more\nThe truth is that you'd rather\nSpend our limited time together\n\n[bridge]\n(Chords: Am - Bb - C - F - Am - Bb - C)\n(Vocal-Perf: Starts intimately, almost a whisper, builds with desperation. A slight vocal crack on \"love\".)\n(Inst: Stripped back to just piano and vocal. The piano plays sparse, questioning chords. Strings re-enter and swell dramatically at the end.)\n(Melody-Dev: The melody climbs higher, increasing tension.)\nProtection alone is not enough\nProviding cannot fill an empty cup thirsting for love\nI questioned myself a lot–\nWhat do I know about love?\nHow can I recreate what I've never had?\nAll I know is that I must keep you thriving\nIf nutrients are what you lack\nI will water you with every drop of blood I have\n\n[chorus]\n(Chords: F - C - Dm - Bb)\n(Vocal-Perf: Maximum emotional intensity and volume. Fortissimo. The highest notes of the song are here.)\n(Inst: The full band and orchestra crash in on the downbeat. Drums are powerful with heavy cymbal crashes. Overdriven guitar adds texture.)\n(Mix: The biggest, widest point of the song. Everything is layered for a massive wall of sound.)\n(Transition: A powerful drum fill launches the section.)\nBut now I know that\nSacrifice is the easy path\nMy absence cannot ever change the fact\nI wanted the very best for you, believe me\nOur threads in red can never be cut\nAnd S is not for sayonara\nWill you forgive me at last?\n\n[outro]\n(Chords: F - C - Dm - Bb - F)\n(Inst: All instruments fade out except for the solo piano, which reprises the intro motif.)\n(Mix: The wide space collapses back to the intimate sound of the intro.)\n(Structure: Music slowly decelerates and fades to silence on a final, sustained F major chord.)",
  "song_id": "01_SAIKAI_20260419",
  "_meta": {
    "provider": "google",
    "model": "gemini-2.5-pro",
    "usage": {
      "prompt_tokens": 13818,
      "completion_tokens": 1253,
      "total_tokens": 18168
    },
    "generated_at": "2026-04-19T00:52:49.531005+08:00"
  }
}