{"status": "success", "json_a": {"prompt": "Genre: Mandopop / Ballad; BPM: 140; Key: Eb Major; Rhythm: Laid-back pop-rock groove; kick on 1 & 3, snare on 2 & 4; clean 8th-note hats; on-the-grid; Instruments: Fingerpicked steel-string acoustic; clean electric bass; dry, tight drum kit; orchestral string section; high synth bell melody; Vocals: Male tenor; clean, slightly nasal timbre; gentle verse delivery; emotional, open chorus; light compression, clean reverb; Melody: Verse: narrow range, lands on tonic; Chorus: ascending arch, resolves down; Mood: Flipping through a photo album in a quiet room, dust motes dancing in a sunbeam.; Production: High-fidelity polish; vocal-centric mix; smooth compression; wide stereo strings; clean reverb.; Language: Mandarin; Highlight: The sudden entry of the full drum kit and bass on the downbeat of the first chorus, following the sparser, unresolved pre-chorus melody.", "lyrics": "[intro]\n(Hook-DNA: Rhythmic pattern: dotted-eighth + sixteenth + quarter, on beat 1; Pitch anchor: circles the 5th, resolves to tonic; Repetition: motif repeats twice, then varies)\n(Inst: Fingerpicked steel-string acoustic guitar; high-pitched synth bell melody with long delay)\n(Chords: Ebmaj7 - Abmaj7 - Ebmaj7 - Abmaj7)\n(Mix: High-fidelity, clean mix. Acoustic guitar is warm and present. Synth bell has a long reverb tail. Centered, intimate soundstage. Transparent master bus compression.)\n\n(Transition: Smooth fade-in of instruments.)\n[verse]\n(Melody-Contour: Narrow range, conversational rhythm; short phrases land on tonic and mediant.)\n(Vocal-Perf: Soft, breathy chest voice; mezzo-piano; minimal vibrato.)\n(Inst: Acoustic guitar continues; clean electric bass enters, playing root notes on downbeats.)\n(Chords: Ebmaj7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7)\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(Transition: Bass line becomes more melodic, subtle cymbal swell leads into pre-chorus.)\n[pre-chorus]\n(Melody-Contour: Stepwise ascending line builds tension; phrase ends unresolved on the 5th.)\n(Vocal-Perf: Intensity increases slightly; more sustained notes.)\n(Inst: Acoustic and bass continue; soft, muted kick drum enters, simple pulse.)\n(Chords: Abmaj7 - Gm7 - Cm7 - Fm7 - Abm6)\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(Transition: Abm6 chord creates strong pull to chorus; vocal melody hangs unresolved, then full band enters on downbeat.)\n[chorus]\n(Hook-Recall: The repetitive rhythm of \"一再一再\" echoes the intro's Hook-DNA motif.)\n(Melody-Contour: Wide ascending arch, peaks on \"卡带\"; resolves with a descending stepwise line.)\n(Melody-Harmonic-Tension: Melody hits major 7th over root Eb chord for bittersweet tension; phrase \"已回不来\" lands on 5th over the V chord, holding tension.)\n(Vocal-Perf: Full voice, mezzo-forte; open timbre with emotional strain; controlled vibrato.)\n(Inst: Full drum kit enters; lush orchestral strings provide sustained pads; acoustic guitar strums.)\n(Chords: Ebmaj7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7 - Ebmaj7)\n(Mix: Stereo field widens significantly with strings; vocal layered with subtle harmonies.)\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(Transition: Strings hold final chord; cymbal decays into the quieter bridge.)\n[bridge]\n(Melody-Contour: New syncopated melodic idea; phrases build in length and intensity.)\n(Melody-Harmonic-Tension: Melody dwells on the 2nd and 4th over minor chords; final phrase resolves strongly to the tonic, setting up the final chorus.)\n(Vocal-Perf: Narrative and dynamic; alternates between soft and strong phrases; backing vocals enter.)\n(Inst: Arrangement thins out then rebuilds; bass becomes more melodic; strings swell.)\n(Chords: Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7)\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(Transition: Big drum fill and string swell leads directly into the final chorus.)\n[chorus]\n(Hook-Recall: The repetitive rhythm of \"一再一再\" echoes the intro's Hook-DNA motif.)\n(Melody-Contour: Wide ascending arch, peaks on \"卡带\"; resolves with a descending stepwise line.)\n(Melody-Harmonic-Tension: Melody hits major 7th over root Eb chord for bittersweet tension; phrase \"已回不来\" lands on 5th over the V chord, holding tension.)\n(Vocal-Perf: Most powerful delivery; ad-libs and harmonies added; sustained high notes.)\n(Inst: All elements at full intensity; strings play active counter-melodies; drums are powerful.)\n(Chords: Ebmaj7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7 - Ebmaj7)\n(Mix: Widest and loudest point 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(Transition: Music holds on the final chord, then fades.)\n[outro]\n(Inst: String section plays a final, mournful melody; acoustic guitar plays simple arpeggios; intro synth bell returns.)\n(Mix: All elements slowly fade out, leaving only reverb tails of strings and synth bell.)"}, "time": 55.6, "attempt": 1, "prompt_ok": true, "lyrics_ok": true, "api": "official", "provider": "google", "model": "gemini-2.5-pro", "usage": {"prompt_tokens": 12535, "completion_tokens": 1507, "total_tokens": 18424}}