{
  "song_id": "02_西海情歌_20260716",
  "prompt": "Genre: Chinese folk-pop, Northwest China desert folk; BPM: 152; Key: G minor pentatonic; Rhythm: Slow 4/4 pop ballad feel, driven by a persistent 16th-note hi-hat/shaker pattern and a simple kick-snare backbeat; Instruments: Layer 1 (Ethnic core): A highly expressive, synthesized erhu-like bowed string carrying the main instrumental melody. Layer 2 (Rhythm foundation): Clean electric bass on root notes, drum machine with a chugging 16th-note hat. Layer 3 (Modern production): Lush synth pads, clean electric guitar arpeggios, acoustic guitar strums; Vocals: Male, raspy male folk vocals, slightly husky, storytelling delivery, warm mid-range, emotionally raw and direct; Mood: Deeply melancholic longing (相思), set against a vast, desolate high-altitude landscape (雪山高原), evoking the feeling of a lonely wanderer (游子); Production: Vocals and lead ethnic synth are dry and front-and-center; Highlight: the mournful, signature melody of the synthesized erhu-like bowed string",
  "title": "你说过会回来的",
  "lyrics": "[intro]\n(Chords: Gm - Eb - Bb - F)\n(Inst: Synthesized erhu-like string enters with a mournful, pentatonic melody. Atmospheric synth pads and a subtle acoustic guitar strum establish the vast, lonely landscape. Bass enters simply on root notes.)\n(Melody-Contour: Opening erhu melody introduces the main hook DNA, lyrical and melancholic.)\n(Mix: Erhu upfront and dry, pads wide in the background.)\n\n[verse]\n(Chords: Gm - Eb - Bb - F)\n(Transition: Drum machine with 16th-note hi-hat begins, setting the slow, trudging pace.)\n(Inst: Arrangement becomes sparse. Bass, drums, and light acoustic guitar support the vocal. Synth erhu plays subtle, long-note counter-melodies.)\n(Vocal-Perf: Raspy, husky male vocal enters. Conversational, storytelling delivery. Every syllable is clear and enunciated with raw emotion. Natural vibrato at the end of phrases.)\n(Melody-Rhythm: Follows natural speech patterns, landing clearly on downbeats.)\n把名字刻进那面黄土墙\n墙角的草又长了一茬黄\n日头西斜照着空院子\n鸽哨声穿不过这山梁\n\n[chorus]\n(Chords: Gm - Eb - Bb - F - Gm - Eb - Bb - F)\n(Transition: Energy lifts slightly with fuller synth pads and a more prominent snare.)\n(Inst: Full arrangement. Synth erhu plays a powerful, soaring counter-melody that echoes the vocal line. Electric guitar arpeggios add texture.)\n(Vocal-Perf: Vocal delivery becomes more intense and strained, conveying deep longing. High notes are powerful and open-throated, with a characteristic husky rasp.)\n(Melody-Contour: Chorus melody features a wider melodic range, peaking on an emotional high note. The phrase structure is highly memorable and singable.)\n你说过会回来的\n怎么连个信也不捎带\n黄河弯了九道弯还是流回了大海\n我绕不过这思念\n你说过会回来的\n路再难也该有个盼头在\n\n[verse]\n(Chords: Gm - Eb - Bb - F)\n(Transition: Arrangement pulls back to the verse dynamic.)\n(Inst: Sparse backing returns. The synth erhu responds to vocal phrases with short, melancholic fills.)\n(Vocal-Perf: Vocal returns to the intimate, storytelling tone. Articulation remains precise and emotionally direct.)\n(Mix: Vocal remains centered and upfront, with instruments providing a wide, atmospheric bed.)\n荒滩上驮盐的骆驼队\n踩散了我垒了三年的堆\n脚印连着脚印向南去\n偏偏没有一个是你的\n\n[chorus]\n(Chords: Gm - Eb - Bb - F - Gm - Eb - Bb - F)\n(Transition: Build-up is slightly stronger than the first chorus, with a simple drum fill.)\n(Inst: Full arrangement returns. The synthesized erhu melody is now more intertwined with the vocal, creating a powerful duet of longing.)\n(Vocal-Perf: Maximum emotional intensity. The husky, raw quality of the voice is pushed to its limit on the sustained notes, conveying desperation and heartbreak.)\n(Melody-Dev: The vocal melody is the same, but the performance is heightened, making it the emotional climax.)\n你说过会回来的\n怎么连个信也不捎带\n黄河弯了九道弯还是流回了大海\n我绕不过这思念\n你说过会回来的\n盼到头发白了又能怎么挨\n\n[interlude]\n(Chords: Gm - Eb - Bb - F)\n(Transition: Vocals drop out, leaving instrumental space.)\n(Inst: The synthesized erhu-like string takes center stage, playing a poignant, virtuosic solo based on the chorus melody. The full rhythm section and pads provide a solid foundation.)\n(Melody-Contour: Erhu solo features expressive slides and vibrato, a final cry of the song's main theme.)\n\n[outro]\n(Chords: Gm - Eb - Bb - F)\n(Transition: Drum beat stops, instruments begin to fade.)\n(Inst: The song deconstructs. The synth erhu plays the final melodic phrase from the intro, holding a long, mournful note. Atmospheric pads and a single acoustic guitar strum fade out slowly into silence.)\n(Sound-Design: The sound of a cold wind might be subtly mixed in with the fading pads.)",
  "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：苍茫辽阔的黄褐色荒原渐变为深沉的蓝灰色暮色，边缘透出一抹微弱的暖橘余晖，如同西北高原黄昏前最后一道光被吞没的瞬间，色调厚重、孤寂、带着无尽等待的沉默感。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": "苍茫辽阔的黄褐色荒原渐变为深沉的蓝灰色暮色，边缘透出一抹微弱的暖橘余晖，如同西北高原黄昏前最后一道光被吞没的瞬间，色调厚重、孤寂、带着无尽等待的沉默感"
  },
  "_craft": {
    "total": 79.0,
    "passed": true,
    "dims": {
      "意象": 18,
      "韵脚": 15,
      "叙事弧": 16,
      "hook": 17,
      "可唱性": 13
    },
    "verdict": "意象功底扎实、西北土地气息是真实的，hook天生有传唱基因，但可唱性上的字符密度问题和第二verse的出韵软尾是进棚前必须动刀的硬伤，不改就是把好料子做成了略嫌毛糙的成衣。",
    "worst_lines": [
      {
        "line": "偏偏没有一个是你的",
        "why": "全曲意象最具体、情绪最私人，却在最关键的段落收尾用「的」字虚词着陆，韵脚软弱，且「偏偏」二字书面腔破坏了前三句积累的西北口语质感",
        "fix": "在「ei/ai」韵部内寻找有画面感的实词收句，例如改写方向：「脚印连着脚印望南排 / 没有一双是你踩」，保住韵脚同时强化视觉具象"
      },
      {
        "line": "黄河弯了九道弯还是流回了大海",
        "why": "意象本身一流，但十四字塞进一个乐句是可唱性灾难，慢板演唱时气息和旋律都会被字符量绑架，且「还是」二字在演唱中极易被吞掉导致意思模糊",
        "fix": "拆成两个短句或削至十字内：「黄河弯了九道弯 / 到头还是归了海」，用换行呼吸替代长句连读，情绪反而更有停顿张力"
      },
      {
        "line": "踩散了我垒了三年的堆",
        "why": "「垒了三年的堆」作为意象略显刻意且指向模糊（盐堆？土堆？），双重动宾嵌套「踩散了我垒了」在演唱节奏上极拗口，三年的时间感被「堆」这个收字的轻声弱化殆尽",
        "fix": "明确意象载体并简化句法：「骆驼队踩过我望了三年的路」或拆写成「荒滩印满了南去的蹄 / 三年的等候踩进了泥」"
      }
    ],
    "rounds": 0,
    "history": [
      {
        "round": 0,
        "total": 79.0,
        "verdict": "意象功底扎实、西北土地气息是真实的，hook天生有传唱基因，但可唱性上的字符密度问题和第二verse的出韵软尾是进棚前必须动刀的硬伤，不改就是把好料子做成了略嫌毛糙的成衣。"
      }
    ],
    "model": "claude-sonnet-4-6"
  }
}