```json
{
  "song_id": "01_hotline bling_20260418",
  "prompt": "Genre: Indie Pop / Lo-fi Singer-Songwriter; BPM: 112; Key: A minor; Rhythm: Gentle, syncopated ukulele strumming carrying a loose, behind-the-beat 4/4 groove; vocals float rhythmically free over the chords; Instruments: Close-mic'd ukulele (finger noise, wood resonance), hazy low-passed synth pad, distant sparse electric piano, found sounds (footsteps); Vocals: Female, intimate close-mic, breathy timbre with gentle vibrato and a slightly fragile delivery; Mood: The specific silence after a phone call you didn't want to end, just the faint hum of the empty line; Production: High-Fidelity, Pristine Radio-Ready Mix with expensive analogue warmth and silky smooth high-end. Intimate, minimalist aesthetic. Vocals are front/center with spacious reverb. Pronounced low-mids for warmth, rolled-off highs; Highlight: The single beat of dead air after a melodic phrase, where the ukulele stops and the vocal re-enters alone, shifting the emotional tone from longing to quiet accusation.",
  "title": "便利贴",
  "lyrics": "[intro]\n(Mix: Intimate, warm, lo-fi aesthetic. Prominent low-mids, silky rolled-off highs. Vocals sit in a bed of plate reverb. Wide stereo field dominated by a single ukulele panned slightly left.)\n(Inst: Close-mic'd ukulele playing a simple, syncopated chord pattern; audible finger slides and fret noise.)\n(Chords: Am - G - C - F)\n\n[verse]\n(Vocal-Perf: Breathy, almost whispered delivery, pitched low in register. Very close to the microphone.)\n(Melody-Rhythm: Phrases begin lazily after beat one, drifting across the bar line.)\n(Inst: Ukulele continues, joined by a subtle, deep synth pad just filling the sub frequencies.)\n(Chords: Am - G - C - F)\n你走的那天 冰箱上有张纸\n"牛奶快喝完了" 四个字\n笔迹淡淡的\n像你的语气\n\n[pre-chorus]\n(Vocal-Perf: Volume increases slightly, a touch more air in the voice. A hint of vulnerability.)\n(Melody-Contour: Gentle stepwise ascending line, building minimal tension.)\n(Chords: Am - G - C - G)\n我把它撕下来 折成小方块\n放进口袋里 没敢扔掉\n\n[chorus]\n(Vocal-Perf: Voice opens up but remains soft. Subtle, low-mixed harmony doubles the main line on key words.)\n(Hook-DNA: Rhythmic motif is a dotted eighth + sixteenth pattern on \"屏幕冰冷的光\"; anchors on the 5th (E); repeats twice, third statement alters rhythm to resolve.)\n(Melody-Contour: Main leap is an ascending perfect 4th on the first beat, creating an emotional lift before descending.)\n(Melody-Harmonic-Tension: Melody holds the major 7th (G#) over the Am chord for a full beat, creating a poignant, unresolved feeling before falling to the root.)\n(Mix: Stereo field widens slightly. Vocal reverb tail becomes more prominent.)\n(Chords: F - C - G - Am)\n那字迹磨损的边 是我摸了几遍\n洗过的牛仔裤里 揉皱又展开\n你说的那些日常 早已散落成烟\n只剩这四个字 还贴着我的心\n\n[verse]\n(Vocal-Perf: Returns to the hushed delivery of the first verse.)\n(Inst: A sparse, heavily-reverbed electric piano plays single counter-melody notes, panned hard right.)\n(Chords: Am - G - C - F)\n新租的房间 没有旧家的味\n暖气声嗡嗡 响一整夜\n我把灯全关了\n才睡得着\n\n[pre-chorus]\n(Vocal-Perf: A touch of vocal fry on the last word, emphasizing resignation.)\n(Melody-Contour: Repeats the same gentle ascending line as the first pre-chorus.)\n(Chords: Am - G - C - G)\n超市的收银台 报出了总价\n我愣了一下 少了一份\n\n[chorus]\n(Vocal-Perf: More confident than the first chorus. Harmonies are slightly louder in the mix.)\n(Hook-DNA: Rhythmic motif is a dotted eighth + sixteenth pattern on \"屏幕冰冷的光\"; anchors on the 5th (E); repeats twice, third statement alters rhythm to resolve.)\n(Melody-Harmonic-Tension: Melody again holds the major 7th over the Am chord, but this time resolves downwards more quickly, feeling more decisive.)\n(Mix: Electric piano becomes more active. Vocal harmonies are wider.)\n(Chords: F - C - G - Am)\n那字迹磨损的边 是我摸了几遍\n洗过的牛仔裤里 揉皱又展开\n你说的那些日常 早已散落成烟\n只剩这四个字 还贴着我的心\n\n[outro]\n(Vocal-Perf: Ad-libbed, wordless vocal line, breathy and fading out.)\n(Inst: Ukulele strums once and lets the chord ring out. Electric piano plays a final, questioning phrase. The synth pad slowly fades.)\n(Mix: All elements are slowly pulled back, leaving only the long reverb tail of the final vocal ad-lib.)\n(Chords: Fmaj7)\n",
  "cover_prompt": "生成一张极简主义（Minimalist）插画和阴影艺术（Shadow art）风格的艺术图片作为无字音乐专辑封面。画面的核心是一张微微泛黄的小纸片贴在浅色墙面上，纸片边角轻微卷起，投下细薄的阴影，纸片上没有任何可读文字，仅用几条模糊的横线暗示字迹。整个投影区域具有淡米白色、带颗粒感的纹理，类似于旧丝网印刷（Screenprint）。背景是一个极淡的暖灰色实色区域，带有微妙的纸张纹理，整体光线柔和、漫射，没有强烈明暗对比。构图干净、宁静且优雅。强烈要求：这是一张纯粹的、极简主义、治愈系插图，绝对不要出现具体的五官、现代工业物品或3D渲染效果！画面必须是无字封面，绝对不要生成任何文字、拼音或英文字母！传达出一种宁静、舒适、怀旧且梦幻的艺术气息。",
  "cover": {
    "template_id": 6,
    "template_name": "极简窗影治愈流",
    "scene_description": "一张微微泛黄的小纸片贴在浅色墙面上，纸片边角轻微卷起，投下细薄的柔和阴影，纸片表面没有可读文字，仅用几条模糊横线暗示褪色的字迹。整体光线漫射温柔，背景为极淡的暖灰色，带有微妙的纸张肌理，营造出安静、怀旧、轻轻被遗留的氛围。"
  }
}
```