{
  "song_id": "04_The Gambler_20260601",
  "prompt": "Genre: Country / Storyteller; BPM: 172; Key: Eb minor; Rhythm: Simple train beat; kick 1&3, snare 2&4; driving 8th-note acoustic strum; behind-the-beat; Instruments: Strummed acoustic gtr; clean electric bass; dry drum kit; clean telecaster fills; lush string pads; male backing harmonies; subtle shaker; Vocals: Male baritone; warm, raspy, weathered timbre; conversational chest voice delivery; light compression, subtle reverb; Melody: Narrative stepwise verse; chorus ascends to peak then resolves; Mood: An old man deals a worn deck of cards under a flickering train car light.; Production: Analogue warmth, radio-ready polish; vocal front-center; wide stereo; gentle compression & reverb; Language: English; Highlight: The shift from sparse verse into the first chorus's full band and harmonies, transforming advice into an anthem.",
  "title": "River Don't Beg",
  "lyrics": "[intro]\n(Hook-DNA: Rhythmic pattern is constant driving 8th-notes; harmony alternates between tonic (i) and subdominant (iv), creating a sense of travel; the i-iv pattern repeats to establish motion.)\n(Mix: Centered, mono-core bass and drums. Strummed acoustic guitar slightly panned. Clean electric guitar fills add width. Warm plate reverb on guitar. Overall mix has analogue warmth, clear but not bright.)\n(Inst: Steel-string acoustic guitar strumming steady 8ths. Clean electric bass playing root notes. Light shaker. Clean electric guitar plays a simple, melodic fill.)\n(Chords: Ebm - Abm - Ebm - Abm)\n\n[verse]\n(Transition: Drums enter with a simple train beat, smoothly lifting the energy from the intro.)\n(Melody-Contour: Narrow range, conversational, following speech rhythm; phrases are short and land on stable chord tones.)\n(Vocal-Perf: Warm, intimate baritone. Storytelling, non-melismatic delivery. Mezzo-piano dynamic.)\n(Inst: Acoustic guitar and bass continue the groove. Drums play a simple train beat with light sticks. Electric guitar plays sparse, tasteful licks between vocal phrases.)\n(Chords: Ebm - Abm - Ebm - Bb7 - Ebm)\nShe came into my diner every Thursday around closing\nOrdered black decaf and left a twenty on the tile\nI'd flip the sign to \"Shut\" and she would barely lift her head up\nSix weeks like that before she even cracked a smile\nI asked her once what kept her up and out past midnight Thursday\nShe cupped the mug like something precious, let the steam hit her chin\nSaid, \"I used to sing for people but I lost the nerve for stages\nNow I just go place to place until the ache wears thin\"\nI poured myself a coffee and I sat across the counter\nShe talked until the parking lot was pale with early light\nAnd somewhere in that telling all the armor started loosing\nI recognized the tired in her eyes — it matched mine right\n\n[chorus]\n(Transition: A simple electric guitar fill leads from the final line of the verse into the downbeat of the chorus.)\n(Hook-Recall: The steady 8th-note rhythmic drive from the intro's Hook-DNA continues, now underpinning the main lyrical hook.)\n(Melody-Contour: Ascending arch, building tension through the first two lines; melody peaks on 'walk away' and resolves downwards on 'run'.)\n(Melody-Harmonic-Tension: Melody holds the 3rd over the IV chord, creating a stable lift, then uses the leading tone over the V chord for strong tension that resolves back to the tonic.)\n(Vocal-Perf: More open, projected tone. Mezzo-forte. Joined by smooth male harmony vocals on key phrases.)\n(Inst: Full band with sticks on drums. Lush string section enters, providing sustained pads that swell.)\n(Mix: Stereo image widens with strings and backing vocals. Lead vocal remains centered and clear.)\n(Chords: Ebm - Abm - Ebm - Bb7 - Ebm - Abm - Ebm - Bb7 - Ebm)\nA river don't beg the valley for permission just to run\nIt carves its own direction long before the carving's done\nSo let the bruise remind you that the bone beneath held steady\nYou were never almost broken — you were just not ready\n\n[verse]\n(Transition: Strings and backing vocals fade out, drums soften, creating dynamic space for the next narrative section.)\n(Melody-Contour: Returns to a narrower, conversational range, similar to the first verse but with slightly more melodic movement.)\n(Vocal-Perf: Maintains a confident, storytelling tone. A sense of earned wisdom in the delivery.)\n(Inst: Band drops back slightly in intensity. Strings are quieter. Drums return to a lighter touch.)\n(Chords: Ebm - Abm - Ebm - Bb7 - Ebm)\nShe stopped coming in October when the clocks fell back an hour\nLeft a folded paper napkin with a number and a date\nIt said, \"There's a bar on Clement Street that lets unknowns play Fridays\nI booked a thirty-minute set — I thought maybe you'd wait\"\nI showed up with my apron still half-tucked into my pocket\nShe walked out under one bare bulb and pulled the mic down low\nAnd every table went stone quiet like the room was holding something\nLike they all knew they were watching someone come back from below\nShe played four songs and one of them was clearly about leaving\nAnother one was clearly about staying in the wrong\nAnd I just held my breath between them like a man between two rivers\nNot sure which bank to swim for, only sure that I was gone\n\n[chorus]\n(Transition: The energy holds from the end of the verse, building directly into the final chorus without a significant drop.)\n(Hook-Recall: The foundational 8th-note rhythmic drive remains constant, locking in the song's signature feel.)\n(Melody-Contour: Same ascending arch as the first chorus, with more declarative vocal energy.)\n(Melody-Harmonic-Tension: Tension and release pattern repeats the first chorus, reinforcing the song's core melodic and harmonic message.)\n(Vocal-Perf: Fullest dynamic level. Ad-libs and backing vocals are more prominent. Strong, declarative delivery.)\n(Inst: Full band with prominent strings and backing vocals. Electric guitar plays more active counter-melodies.)\n(Mix: Widest and fullest point of the mix.)\n(Chords: Ebm - Abm - Ebm - Bb7 - Ebm - Abm - Ebm - Bb7 - Ebm)\nA river don't beg the valley for permission just to run\nIt carves its own direction long before the carving's done\nSo let the bruise remind you that the bone beneath held steady\nYou were never almost broken — you were just not ready\n\n[outro]\n(Transition: Chorus repeats with a gradual volume fade over several bars.)\n(Melody-Contour: Vocalist repeats key phrases from the chorus, ad-libbing, while the melody slowly fades.)\n(Vocal-Perf: Fading out with repeated chorus phrases and conversational ad-libs.)\n(Inst: Full band continues the chorus groove, slowly fading out. The chugging acoustic guitar is one of the last elements to disappear.)\n(Chords: Ebm - Abm - Ebm - Bb7 - Ebm)\nA river don't beg the valley for permission just to run\nIt carves its own direction long before the carving's done\nSo let the bruise remind you that the bone beneath held steady\nYou were never almost broken — you were just not ready",
  "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：深琥珀褐与磨损的砖红在画面中段相互渗透，向上褪化为一层冷调的石板灰，底部压着一道几乎被吸尽的暗靛蓝——像一个人在疲惫与再次开口之间悬停的那一刻，笨重却温热，沉默里藏着将要移动的东西。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": "深琥珀褐与磨损的砖红在画面中段相互渗透，向上褪化为一层冷调的石板灰，底部压着一道几乎被吸尽的暗靛蓝——像一个人在疲惫与再次开口之间悬停的那一刻，笨重却温热，沉默里藏着将要移动的东西"
  }
}