# 完整案例｜《向西三千公里》 ## 已验证结果 - `max_duration`：300秒 - Seed：`82464645235052` - 实际时长：286.754830秒 - 生成耗时：622.828秒 - 人工试听：歌词全部唱完，结尾比较自然 - 尚未确认：旋律公路感是否达到作者最终预期 ## Caption ```text Global Metadata: Mandarin Chinese driving road rock with strong open-highway energy. 100 BPM, G major, 4/4 time. Steady, forward-moving, earthy, free, and expansive. The music should immediately evoke a car traveling along a long highway through mountains, deserts, tunnels, small towns, and changing skies. Prioritize a strong road groove over sentimentality. The entire song must maintain a clear sense of physical motion, like wheels continuously rolling forward. Organic live-band production, warm analog texture, wide stereo space, and a memorable sing-along chorus. Target duration around 4 minutes 30 seconds to 5 minutes. Melody: Use a concise, memorable, and strongly rhythmic vocal melody. The verse melody should stay in a comfortable middle-low register, built from short phrases and repeated motifs that follow the steady pulse of the road. Avoid long, slow, floating notes in the verses. The pre-chorus should gradually climb in pitch and tension. The chorus must open into a broad ascending melody with short, powerful, easy-to-sing phrases. Use a clear melodic lift on the first line of every chorus and a satisfying resolution on the final line. The final chorus should feel wider and stronger but retain the same recognizable melodic hook. Avoid sentimental ballad melodies, overly delicate phrasing, cinematic sadness, and slow introspective delivery. Rhythm and Groove: Use a straight driving eighth-note rock groove from beginning to end. Live drums with a firm kick, snare clearly hitting beats two and four, steady closed hi-hat in the verses, and open hi-hat or ride cymbal in the choruses. Add occasional floor-tom fills that feel like crossing bridges or entering tunnels. The bass should play a persistent eighth-note pulse tightly locked to the kick drum. The groove must feel like continuous forward travel, never dragging, floating, or becoming a slow ballad. Vocal Details: One mature Mandarin lead vocal with a warm, slightly weathered, natural tone. Confident and relaxed in the verses, broader and more powerful in the choruses. Clear Mandarin pronunciation and natural rhythmic phrasing. The singer should sound like a traveler telling a real story while driving, not like a theatrical ballad singer. Add restrained double-tracking in the second chorus and group-style backing vocals in the final chorus. Use brief wordless “哦” vocals only in the instrumental sections and final outro. No English singing, no rap, no shouting, no excessive vibrato, no melismatic runs, and no imitation of any specific singer. Arrangement: Start immediately with a recognizable four-bar electric guitar and harmonica road motif, followed by acoustic guitar open-chord strumming and the full driving rhythm section. Do not use a slow ambient intro. In the verses, use steady acoustic strumming, pulsing bass, tight drums, light Hammond organ, and short clean electric guitar responses between vocal lines. The pre-chorus should add rising toms and wider guitars. The chorus should expand with stronger drums, open cymbals, layered acoustic and electric guitars, Hammond organ, and restrained backing vocals. Include one concise harmonica and electric guitar instrumental break after the first chorus. The bridge should briefly reduce the arrangement to drums, bass, and acoustic guitar without losing the forward pulse, then rebuild quickly into the final chorus. End with an extended instrumental road-rock outro led by the same harmonica and electric guitar motif from the intro, while the full band continues the steady driving groove. Finish with a deliberate final chord rather than a sudden cutoff. Production Constraints: Keep the lead vocal clear and forward. Preserve strong drum and bass impact throughout. Avoid orchestral strings, piano-ballad accompaniment, dreamy ambient pads, slow cinematic builds, soft lo-fi drums, country swing, blues shuffle, and overly polished pop production. The song must sound like a real band performing a confident, energetic highway song. ``` ## Lyrics ```text [Intro] 发动机醒来 天还没有亮 收音机里 传来旧时光 [Verse 1] 加满一箱油 离开这座城 后视镜里的灯 一盏一盏变冷 轮胎压过白线 风吹进车窗 九十七码的路牌 指向下一座山岗 早餐店刚开门 卡车停在路旁 我喝完最后一口咖啡 继续追赶太阳 [Pre-Chorus] 穿过长长的隧道 前面忽然明亮 我把昨天留在身后 让风坐在身旁 [Chorus] 向西三千公里 一路迎着太阳 车轮不停转动 群山就在前方 向西三千公里 穿过风雨和荒凉 今夜睡在哪儿 明天再去想 [Instrumental] 哦…… 向西走 哦…… 不要回头 [Verse 2] 午后经过盐湖 天空低得发蓝 一列火车在远处 和我走了半站 风挡落满尘土 地图翻过几张 陌生号码的公路 把故事越拉越长 黄昏停在路肩 看雁群飞向南方 没有人催我抵达 也没有必须的答案 [Pre-Chorus] 跨过省界的路牌 夜色落在肩上 前方小镇亮起灯火 像一片温暖海洋 [Chorus] 向西三千公里 一路迎着太阳 车轮不停转动 群山就在前方 向西三千公里 穿过风雨和荒凉 今夜睡在哪儿 明天再去想 [Instrumental Break] 哦…… 风越过山口 哦…… 路没有尽头 [Bridge] 也许我不是寻找远方 只是想离开熟悉的围墙 当第一颗星落在公路上 我终于听见心里的声响 不用问终点还有多远 不用问这趟旅程多长 只要方向握在手上 每一公里都算数 [Final Chorus] 向西三千公里 一路迎着太阳 车轮不停转动 群山就在前方 向西三千公里 穿过风雨和荒凉 所有错过的风景 都留在后视镜上 向西三千公里 让夜色落满车窗 等清晨越过雪山 我还继续向前闯 [Instrumental Outro] 哦…… 向西走 哦…… 不要回头 [Outro] 里程表还在转 天边已经发亮 下一座山的背后 还是远方 ```