{
  "prompt": "Genre: Mandopop / Lo-fi R&B; BPM: 132; Key: C Major; Chords: Chorus: Fmaj7-G-Am7-Cmaj7 (IV-V-vi-I); Rhythm: Half-time lo-fi beat with fast 16th-note 808 hi-hats; Instruments: Programmed drums, sub-bass, washy synth pads, clean electric guitar with heavy reverb/delay, subtle e-piano; Vocals: Female; soft, breathy, airy timbre, mid-range; prominent reverb and delay; Mood: Melancholic, dreamy, nostalgic, introspective, yearning; Production: Wide, atmospheric, reverb-drenched mix; vocals centered and intimate, lo-fi bedroom pop aesthetic; Structure: Chorus-Chorus-Outro; Language: Mandarin; Highlight: The intimate, breathy female vocal delivery against a vast, atmospheric, reverb-heavy soundscape.",
  "title": "白墙",
  "lyrics": "[chorus]\n(Chords: Fmaj7 - G - Am7 - Cmaj7)\n(Inst: Washed-out synth pad foundation; Sparse lo-fi beat with kick on 1, snare on 3; Fast 16th-note 808 hi-hats; Clean electric guitar plays quiet, arpeggiated lines panned left, drenched in reverb; Sub-bass follows root notes.)\n(Vocal-Perf: Breathy, airy, intimate delivery; Mezzo-piano dynamics; Melancholic tone; Gentle melodic contour.)\n(Mix: Vocals centered and upfront with long reverb tails; Wide stereo image from pads and guitar effects; Lo-fi aesthetic.)\n(Transition: Seamless loop into the next section; No major dynamic shift.)\n你走后这房间变得太空旷\n我反复开灯关灯 对着四面白墙\n所有你存在过的证据都在蒸发像一场散场\n我站在门口不敢往里望\n怕空气里还残留着你身上的芬芳\n\n[chorus]\n(Chords: Fmaj7 - G - Am7 - Cmaj7)\n(Inst: Instrumentation remains consistent; A subtle, high-register piano melody might be added for a slight lift, but the core arrangement is unchanged.)\n(Vocal-Perf: Performance remains soft and intimate, with a touch more yearning on the final phrases.)\n(Mix: Consistent atmospheric mix; maintaining the dreamy space.)\n(Transition: On the final line, all percussion drops out, leaving only the vocal reverb tail and sustained synth pad to transition into the outro.)\n你走后这房间变得太空旷\n我反复开灯关灯 对着四面白墙\n所有你存在过的证据都在蒸发像一场散场\n我站在门口不敢往里望\n怕空气里还残留着你身上的芬芳\n\n[outro]\n(Chords: Fmaj7 - G - Am7 - Cmaj7, instrumental and fading)\n(Inst: Drums and bass are out. The clean electric guitar plays a simple, melancholic, arpeggiated melody over the sustained, washy synth pads. Focus on atmospheric textures.)\n(Sound-Design: Guitar delay throws are prominent, filling the space. The synth pad is filtered down slowly.)\n(Structure: Instruments repeat the chord progression once, then slowly fade to silence over the second repetition, leaving just a faint reverb tail.)",
  "cover": {
    "template_id": 1,
    "template_name": "复古空旷风景流",
    "scene_description": "清晨浓雾完全吞没的一片空旷平原，远处一排灰白色的电线杆逐渐隐没在雾气尽头，地面覆盖着一层薄霜，天空与大地的边界彻底消融为同一片苍白，整个世界仿佛被按下了静音键，只剩下无边无际的、令人窒息的安静",
    "cover_prompt": "生成一张拍立得（Polaroid）风格的无字版音乐专辑封面。画面描绘的是：清晨浓雾完全吞没的一片空旷平原，远处一排灰白色的电线杆逐渐隐没在雾气尽头，地面覆盖着一层薄霜，天空与大地的边界彻底消融为同一片苍白，整个世界仿佛被按下了静音键，只剩下无边无际的、令人窒息的安静。整体画面必须呈现真实拍立得相片的质感：略微过曝的柔和光线、轻微偏色的复古色调、自然的暗角和柔焦边缘、细腻的胶片颗粒感。色彩是褪色、怀旧的暖色调，仿佛一张被遗忘在抽屉里多年的即时成像照片。强烈要求：画面必须是纯粹的风景，绝对不要出现任何人物、人影、手或脸！绝对不要生成任何文字、字母、歌名或水印！保持空灵、孤独和冥想的氛围。",
    "selection_reason": "歌曲底层情绪是'被抽空后的空旷与残留的眷恋'，Lo-fi R&B的梦幻混响感与浓雾吞没一切的视觉高度契合，复古拍立得的褪色质感恰好呼应了歌词中痕迹蒸发、记忆退场的主题内核。"
  }
}