{
  "song_id": "02_The Limp Twins / Sunday Driver_20260508",
  "prompt": "Genre: Lounge-Pop / Nu-Jazz Fusion; BPM: 150; Key: F minor; Rhythm: Lo-fi drum machine loop with a relaxed, syncopated half-time feel (75 BPM groove), driven by a melodic, walking fretless bassline creating a lazy backbeat.; Instruments: Close-mic'd Rhodes piano (warm, with light tremolo); hollow-body electric guitar (clean neck pickup tone, playing lead melody); direct-in fretless bass (round, warm foundation); crunchy sampled drum machine (kick, snare; Vocals: Male, intimate close-mic delivery, relaxed and breathy mid-range, almost conversational, with subtle slapback delay for thickness.; Mood: Sitting in a parked car on a quiet suburban street, afternoon sun hazy through the dusty windshield, engine off but the radio's still on.; Highlight: The first note of the clean guitar melody at 0:00, landing on the downbeat with a pure, round tone that defines the song's entire cool-jazz character before a single word is sung.",
  "title": "Warm Side Down",
  "lyrics": "[intro]\n(Mix: High-Fidelity, Pristine Radio-Ready Mix with expensive analogue warmth and silky smooth high-end. Bass and electric piano dominate the low-mids. Vocals sit inside the mix, not on top. Subtle master bus glue compression. Intimate stereo field.)\n(Inst: Rhodes piano chords, clean electric guitar lead, fretless bass, lo-fi drum machine loop)\n(Hook-DNA: Guitar melody uses a descending pentatonic motif; a dotted eighth + sixteenth rhythm on beat 1 and 3 of each bar; resolves down to the tonic on the final beat; repeats twice before a variation.)\n\n[verse]\n(Vocal-Perf: Relaxed, almost spoken, breathy tone)\n(Melody-Contour: Mostly flat contour on a single pitch, with small stepwise movements at phrase ends)\n(Melody-Rhythm: Phrases begin on the upbeat of 4, leading into the downbeat, mirroring conversational speech)\n(Chords: Fm7 - A♭maj7 - D♭maj7 - C7)\nThe coffee's gone cold on the right side of the bed\nAnd the indent where you slept\nStill holds the shape of your head\nI pressed my palm to the warm side down\nFelt the heat leave before I even made a sound\n\n[pre-chorus]\n(Vocal-Perf: Intensity builds slightly, melody becomes more defined)\n(Melody-Contour: Gentle arch shape, rising a minor third and falling back)\n(Melody-Rhythm: More syncopated, pushes against the beat before landing on strong beats for emphasis)\n(Chords: B♭m7 - E♭7 - A♭maj7 - D♭maj7)\nI keep reaching for the habit\nOf someone who's gone\nMy arm curls wrong\nOn a pillow that belongs\nTo nobody now\nNobody now\n\n[chorus]\n(Hook-DNA: Guitar melody uses a descending pentatonic motif; a dotted eighth + sixteenth rhythm on beat 1 and 3 of each bar; resolves down to the tonic on the final beat; repeats twice before a variation.)\n(Melody-Harmonic-Tension: The guitar melody's use of the flat 7th (E♭) over the C7 chord creates a bluesy, dominant tension that pulls strongly back to the F minor tonic.)\n(Inst: Instrumental section. Electric guitar takes the lead melody, bass becomes more melodic and active.)\n(Chords: Fm7 - B♭m7 - E♭7 - A♭maj7)\n(Mix: Guitar melody brought to the forefront, light plate reverb added for space.)\n\n[verse]\n(Vocal-Perf: Returns to the initial relaxed, conversational delivery)\n(Chords: Fm7 - A♭maj7 - D♭maj7 - C7)\nThe door still drifts open\nAt the weight of your usual hour\nAnd my joints know the difference\nBetween a ghost and a shower\nMuscle memory's a crooked thing\nIt bends toward what it's missing\n\n[pre-chorus]\n(Vocal-Perf: Builds in melodic range and volume, a touch more confident than the first pre-chorus)\n(Chords: B♭m7 - E♭7 - A♭maj7 - D♭maj7)\nI keep setting out two glasses\nFor a table of one\nPouring water for your silence\nLike the habit hasn't gone\nStill reaching for the warm side\nStill reaching down\n\n[chorus]\n(Hook-DNA: Guitar melody uses a descending pentatonic motif; a dotted eighth + sixteenth rhythm on beat 1 and 3 of each bar; resolves down to the tonic on the final beat; repeats twice before a variation.)\n(Melody-Harmonic-Tension: The guitar melody's use of the flat 7th (E♭) over the C7 chord creates a bluesy, dominant tension that pulls strongly back to the F minor tonic.)\n(Inst: Instrumental section. Electric guitar takes the lead melody, bass becomes more melodic and active.)\n(Chords: Fm7 - B♭m7 - E♭7 - A♭maj7)\n\n[bridge]\n(Vocal-Perf: Vocals become layered, with a main line and a harmonizing echo, more ethereal)\n(Melody-Harmonic-Tension: The main vocal line holds the 5th (C) while the chords shift underneath, creating a pedal-point effect that builds hypnotic tension before resolving on the final phrase.)\n(Inst: The main instrumental chorus loop continues underneath the vocals.)\nThe body learns a person like a floorboard learns a step\nAnd I creak at the same hour, catch my breath\nThe body learns a person, keeps the lesson after loss\nI am fluent in a language at a cost\nThe body learns, the body keeps\nWarm side down, I fall asleep\n",
  "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：暮色中未完全冷却的暖褐与深灰蓝之间的张力——一层浅焦糖色（如散去的体温）压在厚重的蓝灰底色之上，两色之间的边界隐约发光，像清晨四点窗帘缝隙透进的最后一缕余温，整体笼罩在一种低沉却不绝望的静止感中。\n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。\n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": "暮色中未完全冷却的暖褐与深灰蓝之间的张力——一层浅焦糖色（如散去的体温）压在厚重的蓝灰底色之上，两色之间的边界隐约发光，像清晨四点窗帘缝隙透进的最后一缕余温，整体笼罩在一种低沉却不绝望的静止感中"
  },
  "style_direction": "B",
  "style_reference": "Billie Eilish, Lorde"
}