{
  "prompt": "Genre: Spoken Word / Lo-Fi Mandopop / Ambient; BPM: 62; Key: C Major; Chords: I-V-vi-IV (Cmaj7-G-Am7-Fmaj7); Rhythm: Slow, rubato feel; gentle arpeggiated piano chords in quarter and eighth notes; no percussion; Instruments: Soft, felted upright piano with a warm, lo-fi timbre; continuous ambient rain and distant thunder SFX; Vocals: Female, spoken word, soft, gentle, intimate whispery ASMR-like tone; clean and present with light reverb; Mood: Introspective, melancholic, soothing, pensive, rainy, diary-like; Production: Intimate, narrow mix with wide ambient background; close-mic'd piano and vocals; soft, compressed dynamics; Structure: Intro - Spoken Verse 1 - Spoken Verse 2 - Spoken Verse 3 - Outro; Language: Mandarin; Highlight: The core of the track is the fusion of an ASMR-like female spoken word performance with a simple, repetitive lo-fi piano loop and atmospheric rain sounds, creating a deeply intimate and melancholic mood.",
  "title": "旧信封",
  "lyrics": "[intro]\n(Inst: Gentle, soft-toned piano plays a simple arpeggiated melody. Ambient rain and distant thunder sound effects establish the atmosphere.)\n(Mix: Piano is centered and warm. Rain SFX create a wide stereo field. Intimate, close feeling.)\n(Chords: Cmaj7 - G - Am7 - Fmaj7)\n\n[verse]\n(Structure: Spoken word begins over the established instrumental bed.)\n(Vocal-Perf: Soft, delicate, almost a whisper. Introspective and slightly melancholic delivery.)\n(Inst: Piano and rain continue unchanged, providing a constant, soothing background.)\n(Chords: Cmaj7 - G - Am7 - Fmaj7)\n那些被折叠过太多次的纸页\n终于沿着痕迹自己裂开了\n我在深夜的房间数灰尘落下的弧线\n想不起你最后说的那句话是哪年的冬天\n(Transition: Seamless continuation of piano and rain.)\n衣柜深处有一件你穿过的卫衣\n洗了很多遍\n还是带着那股洗衣液混着烟的味道\n\n[verse]\n(Vocal-Perf: Tone remains gentle but carries a heavier emotional weight.)\n(Mix: Vocals remain front and center, maintaining intimacy.)\n(Chords: Cmaj7 - G - Am7 - Fmaj7)\n翻手机\n刻意跳过三月的相册\n却在四月的某张截图里\n看见你发来的晚安\n时间戳是凌晨三点十七分\n我盯着屏幕亮度渐渐暗下去\n像极了一些事情的尾声\n\n[verse]\n(Vocal-Perf: A subtle shift in tone towards quiet acceptance. Delivery becomes slightly warmer.)\n(Melody-Dev: The piano melody remains the same, creating a contrast between the static music and the evolving emotional narrative.)\n(Chords: Cmaj7 - G - Am7 - Fmaj7)\n后来我搬了家\n新的窗户朝西\n每天黄昏的光会铺满整面墙壁\n我开始习惯\n一个人煮面条的时候不再多放一双筷子\n(Transition: Slight pause in vocals before the final lines, increasing emphasis.)\n你寄过来的那些明信片\n我夹在一本再也不会翻开的书里\n不是遗忘\n是终于学会了把沉甸甸的东西轻轻放下\n\n[outro]\n(Inst: Piano continues its loop for a few more bars and then begins to fade out with the rain.)\n(Mix: A slow fade-out of all elements, with the reverb tail of the piano lingering slightly.)\n(Sound-Design: The sound of rain is the last element to disappear completely.)\n(Chords: Cmaj7 - G - Am7 - Fmaj7)",
  "cover": {
    "template_id": 1,
    "template_name": "复古空旷风景流",
    "scene_description": "黄昏时分一条被落叶覆盖的空旷铁轨，延伸向被薄雾吞没的远方，天空是褪色的淡紫与暗橘交织，铁轨两侧的枯草在微风中轻轻摇曳",
    "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：黄昏时分一条被落叶覆盖的空旷铁轨，延伸向被薄雾吞没的远方，天空是褪色的淡紫与暗橘交织，铁轨两侧的枯草在微风中轻轻摇曳。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": "歌曲核心情绪是对过往的沉静告别与释然，复古空旷风景流的孤独感和怀旧色调最契合这种日记般的内省情绪。"
  }
}