{
  "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": "Tide Mark",
  "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 bath towel still holds\nthe shape of where you dried your hair\nTwo mugs on the counter\nboth gone cold\nI know it isn't fair\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 your frequency\ntuned in on low\nLike a radio station\nI can't let go\nThe signal bends but honey\nit won't break\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 tide mark round the tub\nstill sits at your exact height\nI showered standing sideways\njust to keep\nthat waterline in sight\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 memorized the weight\nof how you leaned\ninto my shoulder half-asleep\nThe hollow that you left\nstill holds the heat\nAnd I'm the fool who chose to keep\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.)\nLove is a tide mark, love is a line\nDrawn where your water met mine\nAnd I can't repaint over what you defined\nLove is a tide mark, love is a stain\nCalcium ghost of the rain\nSome things that soften just deepen the grain\nLove is a tide mark left on the wall\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：昏黄暖调的浴室瓷砖白与锈赭色之间的渐变层叠，带有一道横贯画面的细淡水渍痕迹——那是水位曾到达过的高度，颜料在此处微微积聚、边缘自然渗开，色调偏温灰、带有岁月沉淀感，如同一块长年浸润过又晾干的棉布。\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": "昏黄暖调的浴室瓷砖白与锈赭色之间的渐变层叠，带有一道横贯画面的细淡水渍痕迹——那是水位曾到达过的高度，颜料在此处微微积聚、边缘自然渗开，色调偏温灰、带有岁月沉淀感，如同一块长年浸润过又晾干的棉布"
  },
  "style_direction": "B",
  "style_reference": "Billie Eilish, Lorde"
}