{
  "song_id": "01_慢慢，张学友_20260412",
  "prompt": "Genre: Mandopop / Cinematic Ballad; BPM: 62; Key: C minor; Rhythm: Slow 4/4 time with a flowing feel. Arpeggiated piano provides the main pulse, supported by subtle orchestral percussion like cymbal swells. Legato feel.; Instruments: Grand Piano (reverberant, playing arpeggios and chords), Lush String Section (violins, cellos providing soaring pads and countermelodies), Clean Electric Bass (subtle, foundational); Vocals: Male. Emotive, breathy baritenor in verses, transitioning to a full, powerful chest voice in the chorus. Clean production with spacious hall reverb.; Mood: Melancholic, heartbreaking, sorrowful, cinematic.; Production: Polished, wide stereo mix. Vocals are upfront and centered. The instrumental arrangement creates a grand, concert-hall acoustic space. Dynamic build-up from sparse verses to full choruses.; Structure: Intro, Verse, Chorus, Verse, Interlude, Chorus, Outro; Language: Mandarin; Highlight: The grand, cinematic string arrangement that swells in the chorus",
  "title": "旧钥匙",
  "lyrics": "[intro]\n(Chords: Cm - G/B - Ab - Eb/G - Fm - Gsus4 - G - Cm)\n(Inst: Solo grand piano plays a melancholic arpeggiated theme, joined by lush, swelling string pads.)\n(Mix: Intimate piano sound with a wide, cinematic reverb tail.)\n(Hook-DNA: The descending piano melody over minor chords establishes the sorrowful mood.)\n\n[verse]\n(Chords: Cm - G/B - Ab - Eb/G - Fm - Cm/Eb - Gsus4 - G)\n(Vocal-Perf: Intimate, breathy delivery; mezzo-piano; gentle articulation.)\n(Inst: Piano continues arpeggios, sparse string pads provide atmosphere. Very little low end.)\n(Melody-Contour: Mostly stepwise motion, narrow range, conversational rhythm.)\n衬衣还挂在旧门后\n洗过的颜色已褪透\n你的名字存在手机里\n我没勇气按下拨出\n那把钥匙压在抽屉边——\n不对，压在书架最底层的灰里\n\n[chorus]\n(Chords: Eb - Bb/D - Cm - Gm - Ab - Eb/G - Fm - Bb)\n(Vocal-Perf: Shifts to a powerful, full chest voice; mezzo-forte; sustained notes at phrase ends.)\n(Inst: Full string section enters with a soaring, emotional countermelody. Piano plays strong block chords. Cymbal swells mark the downbeats.)\n(Mix: The stereo field widens dramatically. Vocals sit powerfully on top of the dense arrangement.)\n(Melody-Dev: The core hook is the repeated \"慢慢\" motif, building tension.)\n我还记得你喜欢喝热水\n还记得你走路左脚先迈\n记得每一格日历我们撕过\n却忘了是哪天你不再回来\n这些细节长进骨缝里\n比任何遗忘都更难割开\n我一个人站在旧地址门口\n才发现锁芯早就换过了，换了\n\n[verse]\n(Chords: Cm - G/B - Ab - Eb/G - Fm - Cm/Eb - Gsus4 - G)\n(Vocal-Perf: Returns to a softer, more reflective tone, but with a hint of emotional strain.)\n(Inst: Piano and strings are slightly more present than in the first verse, maintaining energy from the chorus.)\n(Melody-Rhythm: Flowing and lyrical, following the speech patterns.)\n(Transition: A subtle cello line leads from the end of the chorus into the verse.)\n超市的收银机还是那台\n嗡鸣声和从前一样\n我拎着只够一个人吃的菜\n路过你曾经站过的货架旁\n手机屏亮了又灭\n没有任何人找我\n\n[interlude]\n(Chords: Ab - Eb/G - Fm - Cm - Ab - Bb - Gsus4 - G)\n(Inst: Fully instrumental section. A passionate, soaring string melody takes the lead over powerful piano chords, creating a cinematic peak.)\n(Mix: The orchestra fills the entire stereo field, showcasing the production's depth.)\n(Structure: Serves as a dynamic peak before the final emotional release.)\n\n[chorus]\n(Chords: Eb - Bb/D - Cm - Gm - Ab - Eb/G - Fm - Bb)\n(Vocal-Perf: The most powerful and emotional delivery; forte; slight vocal strain for effect.)\n(Inst: Full orchestra at maximum intensity. Dramatic percussion swells and timpani hits for emphasis.)\n(Mix: Grandest and widest point of the song. Vocals are pushed slightly harder with compression.)\n(Melody-Dev: Vocal ad-libs could be added over the top for extra emotional weight.)\n(Transition: A powerful final chord with a long decay leads to the outro.)\n我还记得你喜欢喝热水\n还记得你走路左脚先迈\n记得每一格日历我们撕过\n却忘了是哪天你不再回来\n这些细节长进骨缝里\n比任何遗忘都更难割开\n我一个人站在旧地址门口\n才发现锁芯早就换过了，换了\n\n[outro]\n(Chords: Cm - G/B - Ab - G - Cm)\n(Inst: Fades out with the initial piano arpeggio motif from the intro, accompanied by soft, sustained string chords.)\n(Structure: Slow fade out, leaving a feeling of unresolved melancholy.)\n(Sound-Design: The final piano note has a long, natural reverb decay.)\n那把钥匙\n我还留着\n",
  "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、边缘柔和的旧式钥匙剪影，悬浮于从深沉炭灰到冷淡蓝灰的水彩渐变背景中，钥匙周围晕散着一圈极其微弱的暖白色光晕，仿佛被遗忘许久后仍残存着温度。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、边缘柔和的旧式钥匙剪影，悬浮于从深沉炭灰到冷淡蓝灰的水彩渐变背景中，钥匙周围晕散着一圈极其微弱的暖白色光晕，仿佛被遗忘许久后仍残存着温度"
  }
}