{
  "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": "Left Side Empty",
  "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.)\nbought the flavor you never liked\njust to fill the cart with something new\nlatched the cabinet door at night\nlike the dark inside won't leak on through\nthen I made the bed to your side too\nsmoothed the crease where no one ever lay\nall these ordinary things I do\nhave your fingerprints and won't wash away\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.)\nturn the lamp off on your schedule still\nleft foot first across the hardwood floor\nsome reflex the body holds until\nit forgets the reason at its core\nI keep the left side empty, tell myself\nthe room is full enough, the space is fine\nbut muscle memory won't sit on shelves\nit lives in every crooked nightly line\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.)\nleft side empty\nstill so full of you",
  "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：深沉的烟灰蓝与褪色的琥珀黄在画面中央缓慢渗透融合，像一盏台灯在凌晨熄灭后，余温仍滞留在棉质床单的纤维里，色彩偏低饱和，带有时间磨损的温柔感，整体像一个被记住却再也没被填满的位置。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": "深沉的烟灰蓝与褪色的琥珀黄在画面中央缓慢渗透融合，像一盏台灯在凌晨熄灭后，余温仍滞留在棉质床单的纤维里，色彩偏低饱和，带有时间磨损的温柔感，整体像一个被记住却再也没被填满的位置"
  },
  "style_direction": "B",
  "style_reference": "Billie Eilish, Lorde"
}