{
  "song_id": "02_夜曲_20260417",
  "prompt": "Genre: Mandopop / Hip-Hop / Classical Fusion; BPM: 87; Key: F minor; Rhythm: Slow, steady hip-hop groove with a kick on 1/3, snare on 2/4, and constant 16th-note hi-hats. A syncopated nylon guitar provides melodic rhythm.; Instruments: Lo-fi drum machine, deep sub bass, arpeggiated nylon-string acoustic guitar, lush orchestral strings for pads and counter-melodies, and a prominent acoustic piano playing classical nocturne-style arpeggios.; Vocals: Male; Rhythmic, conversational rap in verses and a soft, melodic, breathy singing style in the chorus. Slightly nasal, youthful timbre.; Mood: Melancholic, dramatic, gothic, romantic, somber.; Production: Cinematic and spacious mix. Wide strings and centered, intimate vocals. A slight lo-fi aesthetic with vinyl crackle and dry drum samples.; Structure: Intro - Verse - Pre-Chorus - Chorus - Interlude - Verse - Chorus - Outro; Language: Mandarin; Highlight: The blend of a classical piano nocturne with a lo-fi hip-hop beat.",
  "title": "锈迹",
  "lyrics": "[intro]\n(Chords: Fm - C7 - Dbmaj7 - C7)\n(Inst: Nylon guitar plays a melancholic arpeggiated motif. Lo-fi hip-hop beat enters with vinyl crackle. Strings swell in.)\n(Mix: Intimate, narrow stereo field initially, widens with strings.)\n(Sound-Design: Atmospheric pad, distant wind sound.)\n\n[verse]\n(Chords: Fm - C7 - Dbmaj7 - C7)\n(Vocal-Perf: Rhythmic, almost spoken rap; steady, confident flow; mezzo-piano.)\n(Inst: The core loop of nylon guitar, bass, and drums. Strings hold long, subtle notes in the background.)\n(Melody-Rhythm: Conversational, syncopated against the beat.)\n(Transition: Subtle reverse cymbal swell.)\n地铁报站的女声 每次念到那个区\n我就提前把耳机音量调到最大\n剪票口的黄色灯带坏了两根\n检票员懒得修 我也懒得在意这些细节\n皮带扣松了一格 是三月还是四月的事\n记不清了 只记得那天\n你说你不喜欢我穿这件外套的样子\n我当时没吱声\n回家就把它叠进箱底压着\n\n[pre-chorus]\n(Chords: Bbm7 - Fm - C7 - Fm)\n(Vocal-Perf: Becomes more melodic and sung, a clear lift in energy and pitch, building tension.)\n(Inst: Strings become more prominent, playing a rising line. Beat becomes slightly more active with a light fill.)\n(Transition: A clean pause for a beat before the chorus hits.)\n啊 那年租的房子朝北 冬天瓷砖透着凉\n暖气管道咯咯响 整夜没法睡得安详\n你蜷在我左边 我们背对着背\n却都没开口说太冷 要不要换个方向\n后来你走了 我把那床被子搬去阳台\n晒了整整七天 太阳\n烘不走那种说不清楚的气味\n我才明白 有些东西\n不是靠光照就能蒸发\n\n[chorus]\n(Chords: Fm - C7 - Db - Ab - Bbm - Fm - C7 - Fm)\n(Vocal-Perf: Soft, breathy singing; smooth, connected phrases; emotional but restrained.)\n(Inst: Acoustic piano enters as the lead instrument, playing the iconic classical-inspired melody. Lush, wide strings provide a dramatic backdrop. The full hip-hop beat drives underneath.)\n(Mix: Maximum width and depth. Piano is bright and centered, strings fill the stereo field. Vocals sit comfortably in the middle.)\n锈迹不是一夜长出来的\n是雨季一点一点浸透的\n我以为擦掉就算了\n结果纹路已深入肌理\n现在用什么打磨\n都磨不回原来的光泽\n只剩这首曲 无人知晓地\n\n[interlude]\n(Chords: Fm - C7 - Db - Ab - Bbm - Fm - C7 - Fm)\n(Inst: Nylon guitar plays an expressive, improvised solo over the chorus progression. Strings and piano provide harmonic support. Beat continues.)\n(Mix: Guitar is brought to the forefront, treated with a touch of reverb.)\n(Sound-Design: A subtle whoosh transitions out.)\n\n[verse]\n(Chords: Fm - C7 - Dbmaj7 - C7)\n(Vocal-Perf: Rap delivery returns, slightly more urgent and intense than the first verse.)\n(Inst: Back to the foundational loop of guitar, bass, and drums. Piano drops out.)\n(Melody-Rhythm: More complex syncopation in the rap flow.)\n便利店冰柜的封条撕了一半\n我站在那里盯着看了很久没拿东西\n收银员问要不要加热 我说不用\n结果走出去第一口 烫了舌尖才反应过来\n痛觉来得很迟 这是我最近学到的事\n就像那些周末的下午\n你已经开始走神了 而我还在聊\n聊那家打烊的烤串店\n说改天再去 后来就再也没有改天\n\n[chorus]\n(Chords: Fm - C7 - Db - Ab - Bbm - Fm - C7 - Fm)\n(Vocal-Perf: Sung with slightly more intensity and emotion, a few subtle ad-libs.)\n(Inst: Full instrumentation returns. Piano melody, lush strings, nylon guitar arpeggios, and the hip-hop beat all combine for the final climax.)\n(Mix: The fullest and most powerful section of the song.)\n锈迹不是一夜长出来的\n是雨季一点一点浸透的\n而我把那些没说完的话\n全部压铸进这段旋律\n改天这个词我戒掉了\n因为改天已经变成了永远没有\n这首曲 只剩我自己\n\n[outro]\n(Chords: Fm - C7 - Dbmaj7 - C7)\n(Inst: The beat and bass fade out, leaving the nylon guitar loop and a final, lingering piano chord. Strings fade slowly.)\n(Vocal-Perf: A final, whispered phrase reprising an earlier line.)\n(Structure: Instruments decay, ending on a sustained piano note with vinyl crackle.)\n(Sound-Design: Wind SFX returns and fades.)\n地铁报站的女声 每次念到那个区\n我就提前把耳机音量调到最大",
  "cover_prompt": "生成一张极简主义的几何光影艺术图片作为无字音乐专辑封面。画面的核心是：一块不规则的方形色域，表面呈现出极其细腻的锈蚀肌理——从深铁灰过渡到暗赭红，再向边缘晕散出冷蓝灰色，犹如金属在漫长潮湿中缓慢氧化的横截面，色彩交界处没有清晰边缘，全部以极度柔焦的水彩晕染方式融合，中央留有一道极浅的、近乎透明的竖向亮痕，如同锈层被轻轻刮开后露出的底色。画面必须展现出微妙的高级材质肌理，特别是类似水彩晕染（Watercolor texture）或粗糙艺术纸张的触感。整体构图极度克制、留白（Minimalistic composition），注重光与影的柔和交错（Light and shadow interplay）。强烈要求：画面必须保持极致的安宁与静谧（Calm and serene），除了基础的、柔焦的简单几何图形（如模糊的圆、半透明的方块或柔和的线条）外，绝对不要出现任何复杂的现实物体、风景或人物！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！绝对不要生成人物轮廓。传达出一种充满诗意、呼吸感与冥想空间的视觉感受。",
  "cover": {
    "template_id": 2,
    "template_name": "几何光影艺术流",
    "scene_description": "一块不规则的方形色域，表面呈现出极其细腻的锈蚀肌理——从深铁灰过渡到暗赭红，再向边缘晕散出冷蓝灰色，犹如金属在漫长潮湿中缓慢氧化的横截面，色彩交界处没有清晰边缘，全部以极度柔焦的水彩晕染方式融合，中央留有一道极浅的、近乎透明的竖向亮痕，如同锈层被轻轻刮开后露出的底色"
  }
}