{
  "song_id": "04_琵琶曲（东船与西舫）_20260507",
  "prompt": "Genre: Chinese style pop, historical poetic theme, modern beat fusion; BPM: 109; Key: F# Minor (Pentatonic); Rhythm: Modern pop/trap beat with a prominent backbeat, syncopated bass, and rolling electronic hi-hats, contrasting with flowing traditional melodies.; Instruments: Synthesized Pipa/Guzheng (bright, plucked, plays main melodic hook); 808-style electronic drum kit (deep kick, sharp clap); rolling hi-hats; deep sub-bass; ambient synth pads; simple piano chords.; Vocals: Male and Female duet. Male: Clear pop tenor, conversational, slightly breathy. Female: high-pitched Chinese opera style (戏腔), bright, stylized, used for hooks.; Mood: Nostalgic, romantic melancholy, blending ancient poetic imagery with a modern urban feel. Evokes themes of love and distance (相思) and bittersweet memories.; Highlight: The fusion of a high-pitched, stylized female Chinese opera vocal (戏腔) hook with a modern electronic trap beat.",
  "title": "你走后 长安下了雪",
  "lyrics": "[intro]\n(Chords: F#m - D - A - E)\n(Inst: Synthesized Pipa plays a short, pentatonic arpeggiated motif. Trap beat with deep kick, clap, and rolling hi-hats enters.)\n(Mix: Pipa is centered and dry. Beat establishes a wide stereo field. Sub-bass is present.)\n(Melody-Dev: Hook DNA established by Pipa.)\n\n[verse]\n(Chords: F#m - D - A - E)\n(Inst: Beat continues. Sub-bass provides a simple root-note foundation. A soft synth pad adds atmosphere.)\n(Vocal-Perf: Male tenor enters. Conversational, clear, syllable-precise delivery. No vibrato. Storytelling tone.)\n(Melody-Contour: Mostly stepwise motion within the pentatonic scale. Lower vocal register.)\n(Mix: Male vocal is upfront, centered, with light reverb.)\n灯火将熄时 你说要去更远的地方\n我站在城门口 风把话吹散在夜凉\n那一年的冬 雪落得比往年都早\n\n[pre-chorus]\n(Chords: D - E - F#m - F#m)\n(Transition: Hi-hats become more active. A subtle riser sound effect builds tension.)\n(Inst: Beat continues. Main instruments remain the same.)\n(Vocal-Perf: High-pitched female opera vocal (戏腔) enters. Bright, stylized, precise pitching. Creates a strong contrast.)\n(Melody-Dev: Call-and-response feel builds into the chorus.)\n(Mix: Female vocal cuts through the mix with a bright EQ.)\n霜染了衣袖 却暖不回你回望的眼\n\n[chorus]\n(Chords: F#m - D - A - E)\n(Inst: Full instrumentation. Pipa synth plays the main melodic hook, doubling parts of the vocal melody. Synth pads are more prominent.)\n(Vocal-Perf: Male lead vocal is more powerful and sustained. Every syllable remains clear. Female opera vocal adds ad-libs in the background.)\n(Melody-Contour: Jumps to a higher register. Memorable, singable phrases landing on strong beats. Pentatonic hook.)\n(Mix: Chorus feels wider and louder. Vocals are layered. Sub-bass is driving.)\n你走后 长安下了雪\n我才懂 有些人一别就是缺\n把你名字刻在瓦上 等风把它磨灭\n可雪越下越大 我越想越不舍\n\n[verse]\n(Chords: F#m - D - A - E)\n(Transition: Energy drops. Clap sound becomes slightly softer. Pipa melody becomes sparser.)\n(Inst: Beat simplifies, similar to the first verse.)\n(Vocal-Perf: Male vocal returns to a conversational, intimate tone.)\n(Melody-Contour: Returns to a lower, more restrained range.)\n(Mix: Tighter, more focused mix to create contrast with the wide chorus.)\n旧书页泛黄 你批注过的字迹还在\n月升过屋檐 照见我一个人发呆\n云往西边去 带不走这一地积雪\n换了新茶壶 倒的还是你爱的那味\n\n[pre-chorus]\n(Chords: D - E - F#m - F#m)\n(Transition: Riser and hi-hat pattern re-introduce the build-up.)\n(Inst: Instruments build again towards the chorus.)\n(Vocal-Perf: Female opera vocal enters with the same bright, piercing quality.)\n(Mix: Female vocal again cuts through, signaling the coming chorus.)\n霜染了衣袖 却暖不回你回望的眼\n\n[chorus]\n(Chords: F#m - D - A - E)\n(Inst: Full instrumentation returns with high energy.)\n(Vocal-Perf: Male vocal delivers the second set of chorus lyrics with sustained power. Female ad-libs are more prominent.)\n(Melody-Contour: High-register peak, anthemic feel.)\n(Mix: Maximum width and dynamic energy. All elements are present and driving.)\n你走后 长安下了雪\n没人知道 我哭过几个深夜\n把你留下的簪子藏好 不敢再去看它\n可心里那道口 从没有真正愈合过\n\n[outro]\n(Chords: F#m - D - A - E)\n(Transition: Abrupt cut of vocals after the last word.)\n(Inst: The trap beat and the synthesized Pipa arpeggio play for two more bars and then fade out quickly.)\n(Mix: Rapid fade-out on all instruments, leaving a clean ending.)\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：一个边缘柔和模糊的残月圆形，悬浮于从深靛蓝到冷灰蓝的水彩渐变背景中，月形下方弥散着极淡的暖琥珀色晕光，像是记忆里某个冬夜炉火将熄时的余温，与整片冰冷的蓝灰调形成克制的撞色。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": "一个边缘柔和模糊的残月圆形，悬浮于从深靛蓝到冷灰蓝的水彩渐变背景中，月形下方弥散着极淡的暖琥珀色晕光，像是记忆里某个冬夜炉火将熄时的余温，与整片冰冷的蓝灰调形成克制的撞色"
  }
}