{
  "song_id": "01_We've Never Met but Can We Have a Cup of Coffee or Something_20260512",
  "prompt": "Genre: Jazzy Lo-fi Hip-Hop; BPM: 101; Key: A major; Rhythm: Relaxed, heavily swung boom-bap groove with a behind-the-beat feel; kick on 1 and syncopated offbeats, snare on 2 & 4, lazy open hi-hats; Instruments: Detuned upright piano, Round soft kick drum, Clap/rimshot snare, Sizzly lo-fi hi-hats, Subtle sub-bass; Vocals: Female, breathy and gentle, intimate close-mic technique, almost spoken-word delivery, with light plate reverb and minimal EQ; Mood: The feeling of dozing off on a train, watching rain streak down the window as the city blurs by; Production: High-Fidelity, Pristine Radio-Ready Mix with expensive analogue warmth and silky smooth high-end, then filtered and degraded; Highlight: The entrance of the main detuned upright piano loop after the atmospheric intro; its brain-scratching melodic hook, with its gentle, imperfect tuning, immediately establishes the song's entire nostalgic world.",
  "title": "Shoulder Weight",
  "lyrics": "[intro]\n(Mix: Mono-centric image, heavy side-chain compression ducking to kick, highs rolled off around 10kHz, prominent sub-bass foundation below 80Hz. Key effects: persistent vinyl crackle sample, subtle room reverb on piano.)\n(Inst: Filtered water sounds, Vinyl crackle.)\n(Chords: Ambient)\n(Instrumental)\n\n[verse]\n(Hook-DNA: Piano motif uses a simple dotted-eighth + sixteenth rhythm starting on beat 1; circles around the major 7th and 5th of the tonic; repeats 4 times before a simple descending resolution.)\n(Melody-Contour: Gentle arch shape, starts on 5, rises to M7, descends back to 3. Signature interval is the recurring major 7th.)\n(Melody-Rhythm: Phrases land squarely on downbeats, very relaxed, lagging slightly behind the kick drum's attack.)\n(Inst: Detuned upright piano, Lo-fi drum kit (soft kick, clap-snare), Round sub-bass.)\n(Chords: Aadd9 - Dmaj7 - F#m7 - E7)\n(Vocal-Perf: Soft, breathy, almost spoken, minimal dynamic change.)\nthe whole city shifting underneath our feet\ntwo strangers on the same line, same Tuesday heat\nyour sleeve just grazing mine at Seventh Avenue\nthe train rocks left — and suddenly I'm leaning into you\n\n[interlude]\n(Transition: Low-pass filter sweep down.)\n(Inst: Detuned upright piano (solo), Sub-bass sustains, Vinyl crackle more prominent.)\n(Chords: Aadd9 - Dmaj7 - F#m7 - E7)\n(Vocal-Perf: Wordless, hazy vocal pads, layered harmonies.)\n(Instrumental)\n\n[verse]\n(Transition: Drums re-enter without a fill, just landing back in the pocket.)\n(Hook-DNA: Piano motif uses a simple dotted-eighth + sixteenth rhythm starting on beat 1; circles around the major 7th and 5th of the tonic; repeats 4 times before a simple descending resolution.)\n(Melody-Contour: Gentle arch shape, starts on 5, rises to M7, descends back to 3. Signature interval is the recurring major 7th.)\n(Melody-Rhythm: Phrases land squarely on downbeats, very relaxed, lagging slightly behind the kick drum's attack.)\n(Inst: Detuned upright piano, Lo-fi drum kit (soft kick, clap-snare), Round sub-bass.)\n(Chords: Aadd9 - Dmaj7 - F#m7 - E7)\n(Vocal-Perf: Soft, breathy, almost spoken, slightly more rhythmic emphasis.)\nyou never looked my way, no word was ever said\njust the low hum of the rails and the weight against my head\nnothing happened — and yet\nI held that shoulder weight the whole ride home instead\n\n[outro]\n(Mix: Slow volume fade over 8 bars, low-pass filter closes down to just the vinyl crackle.)\n(Inst: Piano loop repeats, Drums loop, gradual fade.)\n(Chords: Aadd9 - Dmaj7)\n(Vocal-Perf: Single sustained breathy note fades with instruments.)\nnothing happened — and yet\neverything did",
  "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：温热的琥珀黄与蒙灰的烟蓝交叠，像车厢玻璃内侧积聚的水汽，边缘渗出一道极淡的金，整体像某个午后正在慢慢变凉的瞬间，说不清是温暖还是消逝。\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": "温热的琥珀黄与蒙灰的烟蓝交叠，像车厢玻璃内侧积聚的水汽，边缘渗出一道极淡的金，整体像某个午后正在慢慢变凉的瞬间，说不清是温暖还是消逝"
  },
  "style_direction": "B",
  "style_reference": "Billie Eilish, Lorde"
}