{
  "prompt": "Genre: City Pop / J-Pop / Jazz-Funk; BPM: 108; Key: F Major; Rhythm: Mid-tempo groove with a clean acoustic drum backbeat, melodic syncopated electric bassline, and 16th-note hi-hats. Syncopated Rhodes and funky guitar provide harmonic drive.; Instruments: E.Bass (round, melodic), Drums (punchy, acoustic), Rhodes Piano (lush chords); Vocals: Female lead, clear and powerful tone, emotive delivery with controlled vibrato. Processed with light reverb. Lush female backing harmonies.; Mood: Nostalgic, sophisticated, urban, melancholic yet danceable. A late-night city driving vibe.; Production: Polished 80s studio sound. Wide stereo image with clean instrument separation. Tasteful reverb creating depth and space.; Structure: Intro, Verse, Pre-Chorus, Chorus, Verse, Chorus, Outro.; Language: English; Highlight: The dynamic interplay between the powerful lead vocal and the tight, syncopated brass section stabs in the chorus.",
  "lyrics": "[intro]\n(Chords: Fmaj7 - C/E - Dm7 - C - Bbmaj7 - Am7 - Gm7 - C7sus4 - C7)\n(Inst: Lush strings, gentle Rhodes piano, sparse bass and drums. Female backing vocals enter with a soft, layered harmony.)\n(Vocal-Perf: Breathy, gentle, floating head voice.)\nTo you…yes my love to you\nyes my love to you you…to you\n\n[verse]\n(Chords: Fmaj7 - Edim7 - A7 - Dm7 - Gm7 - Am7 - Bbmaj7 - C7)\n(Inst: Full rhythm section enters. Bass plays a melodic, walking line. Rhodes plays syncopated chords. Clean electric guitar plays muted chucks on the off-beats.)\n(Vocal-Perf: Conversational, chest voice, clear and upfront.)\n(Mix: Vocals centered, rhythm section providing a solid foundation, wide stereo field.)\n私は私 貴方は貴方と\n昨夜言ってたそんな気もするわ\n\n[pre-chorus]\n(Chords: Gm7 - C7 - Am7 - Dm7 - Gm7 - C7 - Fmaj7 - F7)\n(Inst: Strings and brass swell, building tension. Drums become more active with subtle fills.)\n(Vocal-Perf: Intensity builds, rising in pitch and volume, leading into the chorus.)\n(Transition: Drum fill with a cymbal crash.)\nグレイのジャケットに\n見覚えがあるコーヒーのしみ\n相変らずなのね\nショーウィンドウに二人映れば\n\n[chorus]\n(Chords: Bbmaj7 - Am7 - Dm7 - Gm7 - C7 - Fmaj7 - F7)\n(Inst: Brass section enters with powerful, syncopated stabs. Strings play soaring counter-melodies. The full arrangement is active and dynamic.)\n(Vocal-Perf: Powerful, emotive, full-throated belt. Backing vocals echo key phrases.)\n(Melody-Dev: The main hook is highly memorable and rhythmically punchy.)\nstay with me…真夜中のドアをたたき\n帰らないでと泣いた\nあの季節が 今 目の前\n\n[verse]\n(Chords: Fmaj7 - Edim7 - A7 - Dm7 - Gm7 - Am7 - Bbmaj7 - C7)\n(Inst: Arrangement pulls back slightly to match Verse 1's energy, but with subtle string pads remaining.)\n(Vocal-Perf: Returns to a more narrative, restrained delivery, with a touch of melancholy.)\n(Sound-Design: Subtle saxophone fills in the gaps between vocal phrases.)\n恋と愛とは違うものだよと\n昨夜言われたそんな気もするわ\n\n[chorus]\n(Chords: Bbmaj7 - Am7 - Dm7 - Gm7 - C7 - Fmaj7 - F7)\n(Inst: Full dynamic energy returns. Brass and strings are prominent. Alto sax begins to ad-lib more freely in the background.)\n(Vocal-Perf: Maximum emotional intensity, with ad-libs and slight melodic variations.)\n(Mix: Dense, layered, all elements driving the energy forward.)\nstay with me…淋しさまぎらわして\n置いたレコードの針\n同じメロディ繰り返していた……\n\n[outro]\n(Chords: Bbmaj7 - Am7 - Gm7 - C7 - Fmaj7)\n(Inst: Music begins to fade out. Alto sax takes over with a lyrical, improvised solo. Rhythm section gradually simplifies.)\n(Vocal-Perf: Lead vocal repeats the main hook with a fading, wistful quality.)\n(Structure: Fade out.)\nstay with me…口ぐせを言いながら\n二人の瞬間を抱いて\nまだ忘れず 大事にしていた",
  "song_id": "01_真夜中のドア〜stay with me (シングルver.)_20260418",
  "_meta": {
    "provider": "google",
    "model": "gemini-2.5-pro",
    "usage": {
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    "generated_at": "2026-04-18T13:30:11.912930+08:00"
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}