```json
{
  "song_id": "02_乌兰巴托的夜_20260507",
  "prompt": "Genre: Mongolian folk pop, vast grassland atmosphere; BPM: 115; Key: C minor pentatonic; Rhythm: Slow 4/4 ballad feel with a steady, simple backbeat, walking pace; Instruments: High-pitched, breathy Dizi (ethnic flute) playing main pentatonic melody; clean sub-bass on root notes; simple electronic drum kit (kick, snare); lush, atmospheric synth pads for space; clean electric guitar arpeggios; Vocals: Female; high-pitched female folk vocals, soaring and expansive, chest-to-head mix, with a clear, direct, storytelling delivery; Mood: Melancholic longing (思乡) of a wanderer (游子) under the vast, silent Mongolian steppe at night; Production: Vocals and Dizi centered and upfront; wide stereo pads creating a vast soundscape; rhythm section clean and supportive, not overpowering; natural reverb; Structure: Intro - Verse - Chorus - Verse - Chorus - Outro; Language: Mandarin; Highlight: The haunting, pentatonic melody of the Dizi flute in the intro and interludes.",
  "title": "草原上的人不说再见",
  "lyrics": "[intro]\n(Chords: Cm - Ab - Eb - Gm)\n(Sound-Design: Sound of a slow-moving train on tracks, distant wind)\n(Inst: A breathy, melancholic Dizi flute enters, playing a simple, memorable pentatonic melody; wide, atmospheric synth pads swell gently underneath)\n(Mix: Dizi is the focus, centered and dry with a long reverb tail; pads are wide and distant, establishing a vast space)\n\n[verse]\n(Chords: Cm - Ab - Eb - Gm)\n(Transition: Train sounds fade back; Dizi melody resolves, leaving space for the vocal to enter)\n(Vocal-Perf: Gentle, clear, conversational tone; syllable-precise delivery; natural, unforced phrasing; storytelling feel)\n(Inst: A simple, slow electronic beat starts (kick on 1 & 3, snare on 2 & 4); clean sub-bass follows the root notes; sparse, clean electric guitar arpeggios add harmonic texture)\n(Mix: Vocal is centered, intimate, and upfront; the rhythm section sits comfortably behind the vocal, providing a steady pulse)\n爸爸的照片贴在墙上等我回\n那条土路走了多少年我没数\n他的眼神\n我每次梦见都不敢细看\n\n[chorus]\n(Chords: Ab - Eb - G - Cm)\n(Transition: Synth pads swell in volume and width, lifting the energy for the chorus)\n(Vocal-Perf: Voice becomes stronger, more resonant in the chest; melody soars on the hook phrase; controlled vibrato on the final word of each line)\n(Melody-Contour: Lyrical arch, ascending to a memorable peak on "那么静"; phrases resolve clearly on pentatonic chord tones)\n(Inst: Dizi re-enters, playing a subtle counter-melody that echoes the vocal line; drum beat becomes slightly more defined with soft hi-hats)\n家在远方远方远方我知道\n我却走不回去 走不回去\n\n[verse]\n(Chords: Cm - Ab - Eb - Gm)\n(Transition: Dizi and pads recede, creating a dynamic drop back to the verse's intimacy)\n(Vocal-Perf: Returns to the gentle, storytelling delivery of the first verse, maintaining clarity and emotional directness)\n(Inst: Rhythm section continues its simple, steady groove; electric guitar plays slightly more melodic fills between vocal phrases)\n(Mix: Focus returns squarely to the close-mic'd vocal)\n妈妈说等秋天等秋天盼我归\n灶台的火柴还是放在老地方\n那炊烟\n隔着千里也把我心口烫\n\n[chorus]\n(Chords: Ab - Eb - G - Cm)\n(Transition: A smooth but powerful swell into the final chorus; all instrumental elements build together)\n(Vocal-Perf: Most powerful and emotional delivery of the song; sustained high notes are open and clear; conveys a sense of cathartic release and solitude)\n(Inst: Dizi plays the main hook melody in unison with the vocal for maximum impact; synth pads are at their fullest and widest; soft cymbal crashes on the downbeats for emphasis)\n(Mix: A full soundscape, but the vocal remains clearly on top of the mix, never overwhelmed)\n家在远方远方远方我知道\n我却走不回去 走不回去\n\n[outro]\n(Chords: Cm - Ab - Eb - Gm)\n(Transition: All vocals end, leaving the instruments to fade out slowly)\n(Vocal-Perf: Final line \"唱歌的人不时掉眼泪\" is delivered almost as a spoken whisper, full of emotion)\n(Inst: Dizi plays a final, fading phrase of the main melody; the beat and bass fade out, leaving only the synth pads)\n(Sound-Design: The sound of the train and wind gradually returns to the foreground as the music disappears, closing the narrative loop)\n离家的人最怕夜里安静",
  "cover_prompt": "生成一张极简主义的抽象环境光晕（Ambient Aura）图片作为无字音乐专辑封面。画面的核心色彩组合与情绪倾向是：辽阔苍凉的深蓝与暗灰渐变，边缘晕染出一丝微弱的暖橘，如同草原深夜远处地平线上残留的最后一点炊烟余温，整体压抑而温柔，思念感扑面而来。画面完全由纯粹的色彩构成，采用极度的柔焦（Soft focus）和重度模糊效果（Blurred effect），使得不同颜色之间产生极其平滑、如丝绸般的无缝过渡。整体质感极致平滑细腻（Smooth texture），没有任何杂质。强烈要求：这是一张彻底抽象的现代色彩场（Color Field）作品，绝对不要出现任何具体的物体、几何图案或锐利的边缘！不需要任何胶片颗粒感！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，不要生成人物轮廓！传达出一种极其平静、舒缓、现代且充满呼吸感的氛围。",
  "cover": {
    "template_id": 1,
    "template_name": "环境光晕流",
    "scene_description": "辽阔苍凉的深蓝与暗灰渐变，边缘晕染出一丝微弱的暖橘，如同草原深夜远处地平线上残留的最后一点炊烟余温，整体压抑而温柔，思念感扑面而来"
  }
}
```