{
  "song_id": "01_恋人_20260512",
  "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.",
  "title": "未寄的站台",
  "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相册翻到一半卡住不动弹\n指尖捏着边角\n纸边毛了起来比当年薄了一点\n中间夹着一张从没投进邮筒的纸片\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翻过来看见蓝色的圆珠笔墨晕开了一片\n数字泡在里面\n背面的数字泡在墨水里\n八还是零我数不清楚看不还\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 the hook echoes the intro's Hook-DNA motif.)\n(Melody-Contour: Wide ascending arch, peaks on high note; resolves with a descending stepwise line.)\n(Melody-Harmonic-Tension: Melody hits major 7th over root Eb chord for bittersweet tension; phrase resolves down on 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那趟车我们没有上\n终点站三个字浮上来又沉下去\n嘴形动了 没有声音 只剩你\n那趟车我们没有上\n票根还在手里 目的地还在那里\n墨水替我记着 那串数字\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我以为没去成是因为没机会\n后来才怕是因为没想去\n这两件事差了整整一个我\n票根攥在手心汗把纸边浸透\n我说不清楚哪个才是真的我\n\n(Transition: Big drum fill and string swell leads directly into the final chorus.)\n[chorus]\n(Hook-Recall: The repetitive rhythm of the hook echoes the intro's Hook-DNA motif.)\n(Melody-Contour: Wide ascending arch, peaks on high note; resolves with a descending stepwise line.)\n(Melody-Harmonic-Tension: Melody hits major 7th over root Eb chord for bittersweet tension; phrase resolves down on 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那趟车我们没有上\n终点站三个字浮上来又沉下去\n嘴形动了 没有声音 只剩你\n那趟车我们没有上\n票根还在手里 目的地还在那里\n墨水替我记着 那串数字\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.)\n相册还卡在那一页没翻过去\n票根还夹着 数字还认不清",
  "cover_prompt": "生成一张无字音乐专辑封面。风格严格参照 20 世纪 Color Field Painting（色域绘画），如 Mark Rothko 晚期作品的色层叠压逻辑与 Helen Frankenthaler 的浸染法（soak-stain technique）。画面的核心色彩与情绪：大面积沉郁的蓝灰色作为底层，中央偏下漾开一团暖黄褐色的洇迹，边缘向四周渗透晕散成细碎的深靛蓝毛边，像某种液体在纤维里缓慢扩张又凝固，整体散发出时间悬停、物证留存的窒息静默感。技法要求：色彩之间的过渡必须模拟颜料在未上浆的粗纹棉布（raw cotton canvas）上自然渗透、晕开的效果，边界柔软但保留颜料浓度不均匀造成的自然深浅变化（pigment pooling）。画面需要呈现真实画布的编织肌理（woven canvas texture），局部可见稀薄处透出的底布纹路。整体色调偏低饱和、微微发灰（muted, desaturated palette），避免荧光感和数字渐变的均匀平滑。绝对禁止：任何文字/字母/拼音、人物或人物轮廓、具象物体、几何图案、锐利边缘、胶片颗粒滤镜、3D渲染质感。",
  "cover": {
    "template_id": 1,
    "template_name": "环境光晕流",
    "scene_description": "大面积沉郁的蓝灰色作为底层，中央偏下漾开一团暖黄褐色的洇迹，边缘向四周渗透晕散成细碎的深靛蓝毛边，像某种液体在纤维里缓慢扩张又凝固，整体散发出时间悬停、物证留存的窒息静默感"
  }
}