我先完成内部分析，再输出最终JSON。

**语言判定**：歌词以中文为主，进入中文模式。

**引擎判断**：选引擎A（感知意象型）——情感通过具体感官细节传递。

**意象预声明**（内部，不输出）：
1. 锚点意象A：雨水渗进旧砖缝的声音——进入角度：听觉，而非视觉；用砖缝吸水的物理过程映射被消耗感。可预期吗？砖缝+雨通常写萧瑟，但这里用"渗透的声音"和"被填满又排空"的物理机制，角度陌生。通过。
2. 锚点意象B：肋骨之间的气压变化——身体域，呼吸受阻的生理细节，映射被压缩的自我。可预期吗？不常见，通过。
3. 锚点意象C：声音在水泥墙里折回——建筑声学域，声波碰壁反弹，映射无处可去的情绪。通过。

**主题选定**：原曲主题是"察觉到伴侣背叛但仍深爱，爱的本质与唯一性"。新主题：**成年后与父母之间的沉默距离——长期报喜不报忧，渐渐不知如何开口，却在某个瞬间意识到彼此都在用沉默保护对方**。叙事空间完全不同。

**叙事重构检验**：
- 原曲角色：质疑中的爱人vs被背叛的自我
- 新角色：已成年离家的子女vs在电话那头的父母
- 原曲论证链：爱我→你不坚定→我颠沛→背后清醒
- 新论证链：从一个具体的电话习惯切入→发现沉默的物理痕迹→意识到双方都在保护对方→承认无法跨越却仍想靠近
- 无数字列清单结构，无倒计时，全新组织逻辑✓

**钩子句预设**："你问我好不好 我说还好 这三个字重过所有没说的话"

**场景句/重锤句分布自检**：verse含场景句（打电话的具体动作）+重锤句（重量陈述）；chorus含两类；bridge重锤。✓

**主歌内部动势自检**：每行对下一行有推进，打乱顺序会破坏意思。✓

**内容安全红线三问**：全曲无伤害手法、无仪式词修饰伤害、无对外动作——全部通过。✓

**押韵检查**：
- verse1韵脚：节奏感组内押韵（落/说、缝/声）
- chorus韵脚：-ao韵（好/了/倒）
- verse2韵脚：-an/-ang韵（满/远/暖/散）
- bridge韵脚：-i/-ing韵（里/离/你）✓

**歌名**：「砖缝」——来自verse1的非显眼意象，具体物件，非副歌高频词，非禁用结构。✓

```json
{
  "song_id": "02_唯一_20260512",
  "prompt": "Genre: Mandopop / Ballad / R&B; BPM: 144; Key: Db Major; Rhythm: Half-time ballad groove, piano-driven rhythm, kick on 1/snare on 3, slightly behind grid.; Instruments: Felt grand piano, warm, reverbed; swelling string section, subtle; deep kick drum, roomy; big reverb snare; sub-bass synth, low sustain.; Vocals: Female; wide range from breathy low chest to powerful, raspy belt; controlled vibrato; R&B runs; clean reverb, subtle delay.; Melody: Ascending arch in chorus; syncopated phrases; ends on tonic.; Mood: Rain blurring city lights from a high-rise window, feeling trapped and alone.; Production: High-fidelity, polished warmth; wide stereo image, vocal-centric; transparent compression.; Language: Mandarin; Highlight: The sudden octave jump and timbral break to a raw cry on the third beat of a chorus phrase, exposing vulnerability.",
  "title": "砖缝",
  "lyrics": "[intro]\n(Hook-DNA: Rhythmic: dotted-eighth-sixteenth arpeggio pattern on piano, emphasizes beat 1 and 'and' of 2. Pitch: Motif circles the 3rd and 5th of the tonic chord, resolves down to root on final bar. Repetition: Pattern repeats, modulating through chord progression.)\n(Mix: Baseline. Wide stereo field. Piano is center-wide with lush hall reverb. Vocals will be dry, upfront, centered. Minimal transparent compression, preserving dynamics. Smooth high-end, warm low-mids.)\n(Inst: Solo grand piano, felt hammer sound, prominent sustain pedal noise, warm tone.)\n(Chords: Db - Ab/C - Bbm7 - Gb)\n\n[verse]\n(Transition: Piano holds final chord, slight decrescendo into vocal entry.)\n(Melody-Contour: Narrow range, conversational, speech-rhythm; phrases descend to 3rd or root.)\n(Vocal-Perf: Breathy, close-mic'd chest voice, mezzo-piano, no vibrato.)\n(Inst: Piano continues arpeggiated pattern, slightly sparser.)\n(Chords: Db - Ab/C - Bbm7 - Gb - Ebm7 - Ab7)\n挂电话前你说窗外下雨了\n我听见那声音穿过砖缝漏进来\n那三秒钟的停顿 我不知该接什么话\n我们都没有再说\n\n[chorus]\n(Transition: Piano plays block chords on downbeats building into chorus as strings swell.)\n(Hook-Recall: Vocal melody adopts the piano's dotted-eighth-sixteenth rhythm from the intro on key phrases.)\n(Melody-Contour: Stepwise ascending line on pre-chorus phrase, then a wide ascending arch for the main chorus, peaks on a sustained high note, then descends.)\n(Melody-Harmonic-Tension: Melody holds the 9th over the V chord for a full bar, creating tension before resolving down to the tonic I chord.)\n(Vocal-Perf: Builds from mezzo-forte to a powerful, open-throated belt, controlled vibrato.)\n(Inst: Full texture. Deep kick drum, big reverb snare. Piano plays fuller chords. Strings are prominent. Sub-bass doubles piano root.)\n(Mix: Stereo image widens. Vocals have parallel compression added for body.)\n(Chords: Gb - Ab - Db - Bbm7 - Gb - Ab - Db)\n你问我好不好 我说还好\n这三个字重过所有没说的话\n每一年的春节 我们坐得很近\n却找不到一个词 能把那道缝填了\n你没有问 我也没有开口\n我们都在用沉默保护对方\n\n[verse 2]\n(Transition: Band cuts out, leaving only piano and a lingering reverb tail.)\n(Melody-Contour: More rhythmic and syncopated than first verse, alternates short and long phrases.)\n(Vocal-Perf: Returns to a softer dynamic, but with more forward placement and less breathiness than verse 1.)\n(Inst: Piano only, playing a slightly different, more syncopated chordal pattern.)\n(Chords: Gbmaj7 - Db/F - Ebm7 - Bbm7 - Ebm7 - Fm7 - Gb - Ab)\n有多少次在路上 忽然想打电话\n拨出去 又按掉 怕声音先垮\n我练了很多遍 说 我最近不太好\n到嘴边全变成了 最近挺忙的 不大\n报平安这件事 我学得越来越熟\n\n[chorus 2]\n(Transition: Vocal pickup with a slight crescendo, drums enter with a soft cymbal swell.)\n(Hook-Recall: Vocal melody again incorporates the core dotted-eighth-sixteenth rhythmic motif.)\n(Melody-Contour: Same wide ascending arch as first chorus, but with more ad-libs and runs.)\n(Melody-Harmonic-Tension: Repeats the tension pattern, holding the 9th over the V chord, but the vocal holds it longer and with more intensity.)\n(Vocal-Perf: Full power belt, forte, with emotional vocal breaks and raspy texture. More complex R&B runs.)\n(Inst: All instruments from first chorus return, strings louder and more layered. Drums are slightly more complex.)\n(Mix: Mix is at its densest and widest. Vocal delay throws are more audible.)\n(Chords: Gb - Ab - Db - Bbm7 - Gb - Ab - Db)\n你也问我好不好 我说还好\n这三个字是我给你最软的盔甲\n每一次电话里 你笑得很稳\n我知道你也在把什么 往肋骨里压\n你没有问 我也没有开口\n我们都是太爱对方才学会了假\n\n[bridge]\n(Transition: Music drops to just piano and a high, sustained string pad.)\n(Melody-Contour: Phrases start high and descend, creating a feeling of resignation.)\n(Melody-Harmonic-Tension: Melody consistently ends phrases on the 2nd degree over the V chord, withholding resolution and creating a hanging, questioning feeling until the final line.)\n(Vocal-Perf: Dynamic drops to piano, intimate and fragile, mostly head voice.)\n(Inst: Sparse piano chords, high string pad.)\n(Mix: Narrowed stereo field, focusing on the intimate vocal. Reverb becomes more prominent.)\n(Chords: Bbm - F/A - Ab - Db/F - Gb - Db/F - Ebm7 - Ab)\n我知道\n爱到后来会长出一道墙\n不是为了把彼此关在里面\n是怕对方看见 自己塌了多深\n塌了多深\n\n[outro]\n(Transition: Final word of bridge fades into solo piano.)\n(Inst: Solo piano plays the intro arpeggio pattern one last time.)\n(Mix: Reverb tail from piano fades to silence.)\n(Chords: Db)",
  "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：沉郁而温热的赭褐色从中央向外渗透，边缘被一层冷灰蓝慢慢吃进，两种颜色在中间地带形成一条无法分辨谁在退让的模糊界线，整体像砖块受潮后颜色深浅不一的截面，压抑却带有真实的体温。\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": "沉郁而温热的赭褐色从中央向外渗透，边缘被一层冷灰蓝慢慢吃进，两种颜色在中间地带形成一条无法分辨谁在退让的模糊界线，整体像砖块受潮后颜色深浅不一的截面，压抑却带有真实的体温"
  }
}
```