{
  "song_id": "03_浪人情歌_20260417",
  "prompt": "Genre: Mandopop / Blues Rock Ballad; BPM: 71; Key: G minor; Rhythm: Slow, heavy backbeat (kick on 1&3, snare on 2&4), eighth-note hi-hats, simple root-note bassline; Instruments: Clean acoustic drum kit with reverb-laden snare, round electric bass, clean arpeggiated rhythm guitar, warm Hammond-style organ pad, and a soulful, overdriven lead electric guitar playing melodic fills and solos; Vocals: Male baritone with a raw, emotional, and conversational delivery, transitioning to more powerful sustained notes in the chorus, with light reverb; Mood: Melancholic, heartbroken, but with a sense of resolute finality; Production: 90s rock style with a clear mix, vocals centered, wide-panned guitars, and prominent hall reverb creating a spacious, dramatic feel; Structure: Intro -> Verse -> Pre-Chorus -> Chorus -> Verse -> Chorus -> Interlude -> Outro; Language: Mandarin; Highlight: The soulful, blues-inflected lead guitar that acts as a second vocal.",
  "title": "旧钥匙",
  "lyrics": "[intro]\n(Chords: Gm - F - Eb - Dm)\n(Inst: Warm organ pad holds chords; A lone, bluesy electric guitar enters with a melancholic, bending motif.)\n(Mix: Spacious, reverb-drenched.)\n\n[verse]\n(Chords: Gm - F - Eb - Dm)\n(Vocal-Perf: Conversational, raw baritone; Mezzo-piano; Almost spoken.)\n(Inst: Sparse arrangement; Bass and drums establish a heavy, slow groove; Clean rhythm guitar plays quiet arpeggios.)\n(Mix: Vocals upfront and centered.)\n抽屉锁扣早已生了锈\n那串钥匙还挂在我的背包旧扣上\n换了门 换了锁 换了新的住址\n偏偏手里这把 从没有丢弃\n(Transition: Drum fill with a single snare hit.)\n\n[pre-chorus]\n(Chords: Bb - F - Gm - Eb)\n(Vocal-Perf: Intensity builds slightly; More melodic than spoken.)\n(Inst: Organ pad becomes more prominent; Bassline becomes more melodic, walking between chords.)\n(Energy: Gentle lift.)\n我说我放下了 说得字字笃定\n却在某个清醒的深夜摸到它的弧形\n它凉进掌心 凉进我每一根指缝\n留着它做什么 自己都说不清\n(Transition: Cymbal swell leads into the chorus.)\n\n[chorus]\n(Chords: Bb - F - Gm - Eb - F - Bb)\n(Vocal-Perf: Full-throated, emotional chest voice; Mezzo-forte; Sustained notes.)\n(Inst: Full band enters; Lead guitar answers vocal phrases with emotive, bluesy licks.)\n(Mix: Wider stereo field; Cymbals add splash and energy.)\n一把打不开任何门的钥匙\n攥得越紧 手心越是淌血的痕迹\n那道门早在某年某月彻底关闭\n我还站在门外 喂养着自己的执迷\n(Transition: Lead guitar holds a final bent note.)\n\n[verse]\n(Chords: Bb - F - Gm - Eb)\n(Vocal-Perf: Returns to a controlled, determined delivery.)\n(Inst: Dynamics pull back slightly, but the full band remains; Lead guitar continues weaving fills between vocal lines.)\n(Energy: Sustained from the chorus, but with more resolve.)\n搬家那天装箱 装了又翻出来\n连同一张发黄的租约夹在信封里边\n明明早就应该 随着旧物一起处理掉\n却还是塞回口袋 骗自己随缘\n(Transition: Drummer builds tension with tom-tom fills.)\n\n[chorus]\n(Chords: Bb - F - Gm - Eb - F - Bb)\n(Vocal-Perf: Peak emotional intensity; Ad-libs with grit and power.)\n(Inst: Drums are more powerful, with cymbal crashes on the beat; Lead guitar is more active and complex.)\n(Energy: Climax of the song.)\n一把打不开任何门的钥匙\n攥得越紧 手心越是淌血的痕迹\n那道门早在某年某月彻底关闭\n我还站在门外 喂养着自己的执迷\n(Transition: The final chord rings out, leading into the solo.)\n\n[interlude]\n(Chords: Gm - F - Eb - Dm - Gm - F - Ebmaj7 - D)\n(Inst: Expressive, melodic electric guitar solo; Features long, sustained bends, fast blues runs, and heavy vibrato over the verse chord progression.)\n(Mix: Guitar is the focus; Band provides a solid, heavy backdrop.)\n\n[outro]\n(Chords: Gm - F - Eb - F - Gm)\n(Vocal-Perf: Spoken word; Dry, intimate, and upfront.)\n(Inst: Band slowly fades out, leaving just a lingering organ pad and a final, quiet guitar phrase.)\n(Mix: Instruments fade, leaving the spoken vocal exposed before a final fade to silence.)\n我终于想明白了\n这把钥匙从来不是为了开门\n它只是一个理由\n让我可以假装 那扇门还在",
  "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：一把轮廓模糊、带有做旧铁锈质感的老式钥匙剪影，悬浮在从深铁灰到沉暗琥珀色的水彩渐变背景中，钥匙边缘向外晕散出柔和的昏黄光晕，仿佛某种未能点亮的记忆残影，背景右侧有一道极其模糊、若隐若现的矩形门框轮廓，几乎要融进深色底色里。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": "一把轮廓模糊、带有做旧铁锈质感的老式钥匙剪影，悬浮在从深铁灰到沉暗琥珀色的水彩渐变背景中，钥匙边缘向外晕散出柔和的昏黄光晕，仿佛某种未能点亮的记忆残影，背景右侧有一道极其模糊、若隐若现的矩形门框轮廓，几乎要融进深色底色里"
  }
}