{
  "song_id": "03_Wind_20260508",
  "prompt": "Genre: Neo-Soul with 70s R&B and Yacht Rock influences; BPM: 161; Key: A# minor; Rhythm: Relaxed, half-time feel driven by a busy 16th-note hi-hat groove over a tight, syncopated kick/snare pattern. The melodic, walking bassline provides driving pocket syncopation.; Instruments: Dry close-mic'd drums, Round fingerstyle bass, Creamy Rhodes piano, Clean chorus guitar, Deep male choir chant; Vocals: Female, with a smooth, breathy, and soulful timbre, moving between a gentle chest voice and a lighter head voice. Features lush background vocal stacks.; Mood: Sitting on a train watching rain-streaked landscapes blur past, the rhythm of the tracks matching a quiet, internal conversation.; Highlight: The initial, unaccompanied deep male choir chant that establishes a vast, ancient space before the intimate, tight band groove abruptly enters, creating a stark and compelling textural contrast.",
  "title": "Grain By Grain",
  "lyrics": "[intro]\n(Inst: Deep male chant, Dry acoustic drums, Round fingerstyle bass, Creamy Rhodes piano)\n(Mix: Warm, analog-tape feel. Wide stereo image from Rhodes panned left and clean guitar panned right. Bass and kick perfectly centered and punchy. Vocal will be front, center, and relatively dry with a short plate reverb. Prominent mid-range, controlled sub-bass, silky smooth high-end.)\n\n[verse 1]\n(Chords: Bbm - Gb - Ab - Bbm)\n(Vocal-Perf: Intimate, breathy delivery, low in register, close-mic'd feel)\n(Inst: Clean electric guitar enters with subtle arpeggios and chord stabs)\n(Melody-Contour: Predominantly stepwise motion with a descending contour, staying within a narrow range)\n(Melody-Rhythm: Phrases begin on the 'and' of beat 1, creating a relaxed, flowing feel that drifts over the bar line)\nSomewhere\nGrow still\n\n[verse 2]\n(Chords: Bbm - Gb - Ab - Bbm)\n(Vocal-Perf: Maintains the same intimate delivery, a sense of quiet reflection)\n(Inst: Bass becomes slightly more melodic, connecting the chords with small runs)\n(Melody-Contour: Continues the gentle, descending melodic shape of the first verse)\n(Melody-Rhythm: Slightly more syncopated phrasing, with more space between lyrical lines)\nThe marrow of a borrowed Tuesday bends\nA posture held for years begins to give\nWhat the spine once braced against, it lends\n\n[bridge]\n(Chords: C#maj7 - G# - Bbm)\n(Vocal-Perf: Dynamic intensity builds slightly, moving from breathy to a more supported, clearer tone)\n(Inst: Rhodes piano plays fuller, more sustained chords, creating a harmonic pad)\n(Melody-Harmonic-Tension: Melody floats on the 5th over the C#maj7 (the III chord), creating a bright, suspended feeling that creates anticipation for the tonic resolution in the chorus)\nEvery scar that pressure left inside the wood\nSpeaks the name of something not yet understood\n\n[chorus 1]\n(Chords: Ebm - Bbm - Ebm - Bbm - Gb - Ab - Bbm)\n(Vocal-Perf: Stronger, full-chest voice on the main phrases. Lush background vocal stacks enter with smooth harmonies)\n(Hook-DNA: Core motif is a syncopated phrase starting on beat 2; melody circles the 5th (F) as its anchor; the motif repeats twice, with the third statement rising a step for variation)\n(Melody-Contour: A distinct ascending leap of a perfect 4th kicks off the main hook, before arching back down)\n(Melody-Rhythm: The main hook lands firmly on beat 2 of each bar, pushing against the backbeat and creating a laid-back but infectious groove)\n(Melody-Harmonic-Tension: The melody holds a sustained 9th over the Ebm (iv chord), creating a rich, soulful tension that resolves gracefully downwards to the root by the end of the phrase)\n(Mix: Stereo image widens. Vocal reverb becomes slightly more noticeable)\nGrain by grain it opens, grain by grain it calls\nShaping what we carry through the weight of all our rises and our falls\nOh, through the weight of all our rises and our falls\n\n[chorus 2]\n(Chords: Ebm - Bbm - Ebm - Bbm - Gb - Ab - Bbm)\n(Vocal-Perf: Most powerful and emotive delivery. Lead vocal includes small, soulful ad-libs. Background vocals are more prominent)\n(Hook-DNA: Core motif is a syncopated phrase starting on beat 2; melody circles the 5th (F) as its anchor; the motif repeats twice, with the third statement rising a step for variation)\n(Melody-Harmonic-Tension: The melody holds a sustained 9th over the Ebm (iv chord), creating a rich, soulful tension that resolves gracefully downwards to the root by the end of the phrase)\n(Mix: Drums get a touch of parallel compression for extra punch. Mix is at its widest and most dynamic)\nI have stood inside the ache of not enough\nWatched the calcified become the supple, watched the hollow fill with love\nGrain by grain it opens, grain by grain it calls\nUnmaking what we cling to till the truest self is all\n\n[outro]\n(Chords: Bbm - Gb - Ab - Bbm)\n(Vocal-Perf: Fades out with improvised, soulful scatting and melodic ad-libs)\n(Inst: Band vamps on the verse progression. Rhodes takes a final, short melodic solo before a slow fade)\n(Mix: Slow, gradual fade-out over 8 bars, leaving only the reverb tail of the Rhodes at the very end)\nGrain by grain\nThe bone remembers\nGrain by grain through the years\nWhat we shed is what remains",
  "cover_prompt": "生成一张无字音乐专辑封面。风格严格参照 20 世纪 Color Field Painting（色域绘画），如 Mark Rothko 晚期作品的色层叠压逻辑与 Helen Frankenthaler 的浸染法（soak-stain technique）。画面的核心色彩与情绪：深沉的赭石棕与烟熏琥珀交融，边缘透出一道隐约的暖金，如同长年受压的木质截面在灯下呈现的年轮纹路——既是重量，也是时间积淀的光。技法要求：色彩之间的过渡必须模拟颜料在未上浆的粗纹棉布（raw cotton canvas）上自然渗透、晕开的效果，边界柔软但保留颜料浓度不均匀造成的自然深浅变化（pigment pooling）。画面需要呈现真实画布的编织肌理（woven canvas texture），局部可见稀薄处透出的底布纹路。整体色调偏低饱和、微微发灰（muted, desaturated palette），避免荧光感和数字渐变的均匀平滑。绝对禁止：任何文字/字母/拼音、人物或人物轮廓、具象物体、几何图案、锐利边缘、胶片颗粒滤镜、3D渲染质感。",
  "cover": {
    "template_id": 1,
    "template_name": "环境光晕流",
    "scene_description": "深沉的赭石棕与烟熏琥珀交融，边缘透出一道隐约的暖金，如同长年受压的木质截面在灯下呈现的年轮纹路——既是重量，也是时间积淀的光。"
  },
  "style_direction": "B",
  "style_reference": "Billie Eilish, Lorde, Solange"
}