{
  "song_id": "02_唯一_20260512",
  "prompt": "Genre: Mandopop / Ballad / R&B; BPM: 144; Key: Db Major; Rhythm: Half-time ballad groove, piano-driven rhythm, kick on 1/snare on 3, slightly behind grid.; Instruments: Felt grand piano, warm, reverbed; swelling string section, subtle; deep kick drum, roomy; big reverb snare; sub-bass synth, low sustain.; Vocals: Female; wide range from breathy low chest to powerful, raspy belt; controlled vibrato; R&B runs; clean reverb, subtle delay.; Melody: Ascending arch in chorus; syncopated phrases; ends on tonic.; Mood: Rain blurring city lights from a high-rise window, feeling trapped and alone.; Production: High-fidelity, polished warmth; wide stereo image, vocal-centric; transparent compression.; Language: Mandarin; Highlight: The sudden octave jump and timbral break to a raw cry on the third beat of a chorus phrase, exposing vulnerability.",
  "title": "骨缝里",
  "lyrics": "[intro]\n(Hook-DNA: Rhythmic: dotted-eighth-sixteenth arpeggio pattern on piano, emphasizes beat 1 and 'and' of 2. Pitch: Motif circles the 3rd and 5th of the tonic chord, resolves down to root on final bar. Repetition: Pattern repeats, modulating through chord progression.)\n(Mix: Baseline. Wide stereo field. Piano is center-wide with lush hall reverb. Vocals will be dry, upfront, centered. Minimal transparent compression, preserving dynamics. Smooth high-end, warm low-mids.)\n(Inst: Solo grand piano, felt hammer sound, prominent sustain pedal noise, warm tone.)\n(Chords: Db - Ab/C - Bbm7 - Gb)\n\n[verse]\n(Transition: Piano holds final chord, slight decrescendo into vocal entry.)\n(Melody-Contour: Narrow range, conversational, speech-rhythm; phrases descend to 3rd or root.)\n(Vocal-Perf: Breathy, close-mic'd chest voice, mezzo-piano, no vibrato.)\n(Inst: Piano continues arpeggiated pattern, slightly sparser.)\n(Chords: Db - Ab/C - Bbm7 - Gb - Ebm7 - Ab7)\n换季的时候搬出那个房间\n窗框还留着你钉过的痕迹\n我盯着那个钉孔看了很久\n才明白有些洞 填不回去\n\n[chorus]\n(Transition: Piano plays block chords on downbeats building into chorus as strings swell.)\n(Hook-Recall: Vocal melody adopts the piano's dotted-eighth-sixteenth rhythm from the intro on key phrases.)\n(Melody-Contour: Stepwise ascending line on pre-chorus phrase, then a wide ascending arch for the main chorus, peaks on a sustained high note, then descends.)\n(Melody-Harmonic-Tension: Melody holds the 9th over the V chord for a full bar, creating tension before resolving down to the tonic I chord.)\n(Vocal-Perf: Builds from mezzo-forte to a powerful, open-throated belt, controlled vibrato.)\n(Inst: Full texture. Deep kick drum, big reverb snare. Piano plays fuller chords. Strings are prominent. Sub-bass doubles piano root.)\n(Mix: Stereo image widens. Vocals have parallel compression added for body.)\n(Chords: Gb - Ab - Db - Bbm7 - Gb - Ab - Db)\n肋骨和肋骨之间有条缝\n你住在那里 我呼吸才不空\n每次吸气到最深的地方\n就碰见你 又疼又暖又无从逃\n我拆了你留下的所有坐标\n却在骨缝里 找到你全部\n\n[verse 2]\n(Transition: Band cuts out, leaving only piano and a lingering reverb tail.)\n(Melody-Contour: More rhythmic and syncopated than first verse, alternates short and long phrases.)\n(Vocal-Perf: Returns to a softer dynamic, but with more forward placement and less breathiness than verse 1.)\n(Inst: Piano only, playing a slightly different, more syncopated chordal pattern.)\n(Chords: Gbmaj7 - Db/F - Ebm7 - Bbm7 - Ebm7 - Fm7 - Gb - Ab)\n跑步跑到岔气停下来\n那一口气梗在胸腔中间\n像极了说到一半没说完的话\n悬在那 落不下去\n身体记住了你靠近时的气压\n我一喘 就知道是你\n\n[chorus 2]\n(Transition: Vocal pickup with a slight crescendo, drums enter with a soft cymbal swell.)\n(Hook-Recall: Vocal melody again incorporates the core dotted-eighth-sixteenth rhythmic motif.)\n(Melody-Contour: Same wide ascending arch as first chorus, but with more ad-libs and runs.)\n(Melody-Harmonic-Tension: Repeats the tension pattern, holding the 9th over the V chord, but the vocal holds it longer and with more intensity.)\n(Vocal-Perf: Full power belt, forte, with emotional vocal breaks and raspy texture. More complex R&B runs.)\n(Inst: All instruments from first chorus return, strings louder and more layered. Drums are slightly more complex.)\n(Mix: Mix is at its densest and widest. Vocal delay throws are more audible.)\n(Chords: Gb - Ab - Db - Bbm7 - Gb - Ab - Db)\n肋骨和肋骨之间有条缝\n你住在那里 我呼吸才不空\n每次想把你从里面挖走\n又怕挖空了 连我也不剩\n我试过用别人的名字去填那道缝\n发现那个形状 只有你\n\n[bridge]\n(Transition: Music drops to just piano and a high, sustained string pad.)\n(Melody-Contour: Phrases start high and descend, creating a feeling of resignation.)\n(Melody-Harmonic-Tension: Melody consistently ends phrases on the 2nd degree over the V chord, withholding resolution and creating a hanging, questioning feeling until the final line.)\n(Vocal-Perf: Dynamic drops to piano, intimate and fragile, mostly head voice.)\n(Inst: Sparse piano chords, high string pad.)\n(Mix: Narrowed stereo field, focusing on the intimate vocal. Reverb becomes more prominent.)\n(Chords: Bbm - F/A - Ab - Db/F - Gb - Db/F - Ebm7 - Ab)\n不是不放手\n是放开之后 空气都变轻了\n轻到我站不稳\n才知道是你一直压着我 让我有重量\n\n[outro]\n(Transition: Final word of bridge fades into solo piano.)\n(Inst: Solo piano plays the intro arpeggio pattern one last time.)\n(Mix: Reverb tail from piano fades to silence.)\n(Chords: Db)",
  "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：从画面中央向外层层渗开的深石板蓝与暗玫瑰棕，两色在中间地带形成一道无法辨认边界的暧昧过渡，像两种物质曾经高度混合、现在各自收缩却仍留有对方的色素，传达出一种分离之后身体里还残存着对方温度的沉默撕扯感。\n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。\n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": "从画面中央向外层层渗开的深石板蓝与暗玫瑰棕，两色在中间地带形成一道无法辨认边界的暧昧过渡，像两种物质曾经高度混合、现在各自收缩却仍留有对方的色素，传达出一种分离之后身体里还残存着对方温度的沉默撕扯感"
  }
}