{
  "prompt": "Genre: Chinese-style Pop Ballad; BPM: 68; Key: G minor (pentatonic influenced); Rhythm: Alternating free-rhythm spoken passages and metered ballad sections, with subtle, flowing percussion; Instruments: Pipa (lead melodic, plucked, tremolo, expressive slides); Dizi (brief, mournful counter-melodies); Subtle modern percussion (soft kick; Vocals: Male and Female duet. Female: clear, expressive mezzo-soprano, gentle vibrato, precise diction, emotional storytelling. Male: clear tenor, poetic, narrative, with recitative spoken passages. Both prioritize clear, almost classical poetic enunciation; Mood: Melancholy and nostalgic, evoking imagery of autumn moon and flowing water, imbued with a sense of parting sorrow and tragic fate from ancient poetry; Highlight: Dramatic interplay between expressive pipa melodies and poetic, narrative vocal delivery, blending ancient-poetry recitation with modern ballad with a gentle acoustic folk touch.",
  "lyrics": "[intro]\n(Chords: Gm - Cm - Dm - Gm)\n(Transition: Gentle entrance of Pipa, setting a melancholic scene.)\n(Sound-Design: Sparse Pipa tremolo fading into sustained synth pad.)\n(Inst: Pipa takes center stage with a signature motif.)\n(Mix: Pipa slightly upfront, synth pad underneath, creating space.)\n\n[verse]\n(Chords: Gm - Dm - Eb - Cm - F - Bb - Gm - Dm)\n(Transition: Subtle acoustic guitar fingerpicking joins, bass enters lightly.)\n(Melodic-DNA: Descending pentatonic phrases, starting high and settling lower.)\n(Phrase-Structure: Symmetrical 4-bar phrases, with a slight pause before the last line for emphasis.)\n(Contour-&-Range: Mid-range, flowing melody, mostly within a minor pentatonic scale.)\n(Vocal-Perf: Male vocal, clear and narrative, emphasis on poetic diction, melancholic tone.)\n(Mix: Male vocal central, acoustic guitar delicate, bass supportive, Pipa offers occasional fills.)\n(Inst: Acoustic guitar provides rhythmic pulse, Pipa adds sparse, expressive counterpoint.)\n浔阳江头夜送客， 枫叶荻花秋瑟瑟。\n主人下马客在船， 举酒欲饮无管弦。\n忽闻水上琵琶声， 主人忘归客不发。\n寻声暗问弹者谁？\n\n[pre-chorus]\n(Chords: Eb - Bb - Cm - Gm - Dm - Gm)\n(Transition: Melody subtly lifts, percussion softly enters.)\n(Melodic-DNA: Rising melodic fragments, building anticipation, using modal shifts.)\n(Phrase-Structure: More dynamic than verse, leading directly into the chorus without a hard stop.)\n(Contour-&-Range: Begins mid-range, ascends slightly to create tension.)\n(Vocal-Perf: Female vocal enters, gentle but more emotive, slightly breathy, clear enunciation.)\n(Mix: Female vocal takes lead, percussion gentle, Pipa provides a short, quick embellishment.)\n(Inst: Pipa quickening its pace, drums establish a soft, steady beat.)\n移船相近邀相见， 添酒回灯重开宴。\n千呼万唤始出来， 犹抱琵琶半遮面。\n\n[chorus]\n(Chords: Gm - Eb - Bb - F - Gm - Cm - Dm - Gm)\n(Transition: Full instrumentation, more dynamic feel, Pipa becomes more virtuosic.)\n(Melodic-DNA: Strong, memorable pentatonic melody, featuring a characteristic ascending leap and a falling phrase, evoking the sound of the pipa.)\n(Phrase-Structure: Energetic, 2-bar repeated motifs, giving a sense of rhythmic drive.)\n(Contour-&-Range: Wider pitch range, hitting higher notes for emotional impact, descending gracefully.)\n(Vocal-Perf: Duet, strong and harmonious, clear articulation, powerful yet controlled.)\n(Mix: Vocals prominent and blended, Pipa takes a more active melodic role, drums more pronounced.)\n(Inst: Pipa playing intricate arpeggios and tremolos, drums provide a consistent, driving beat.)\n大弦嘈嘈如急雨， 小弦切切如私语，如私语。\n嘈嘈切切错杂弹， 大珠小珠落玉盘，落玉盘。\n\n[bridge]\n(Chords: Cm - Gm - Eb - Dm - Gm)\n(Transition: Tempo subtly slows, instrumentation becomes sparser, focus shifts to raw emotion.)\n(Melodic-DNA: Slower, more sustained notes, with expressive Pipa slides and bends, conveying deep sorrow.)\n(Phrase-Structure: Longer, more lyrical phrases, almost recitative-like, with Pipa responding to vocal lines.)\n(Contour-&-Range: Mostly lower-mid range, somber and introspective, with occasional Pipa accents.)\n(Vocal-Perf: Male vocal, deep and contemplative, almost spoken, conveying profound sadness, subtle vibrato.)\n(Mix: Male vocal intimate, Pipa sparse and resonant, gentle synth pads provide an atmospheric backdrop.)\n(Inst: Pipa plays mournful, sustained notes; Dizi enters with a sad counter-melody.)\n冰泉冷涩弦凝绝， 凝绝不通声暂歇。\n别有幽愁暗恨生， 此时无声胜有声，胜有声。\n\n[interlude]\n(Chords: Gm - Cm - F - Bb)\n(Transition: Instrumental, Pipa solo with light orchestral backing. Shift to pure spoken narration.)\n(Sound-Design: Pipa solo with Dizi accompaniment, then pure narration with minimal background texture.)\n(Inst: Pipa and Dizi intertwine for a short, melancholic instrumental passage before the narration.)\n(Mix: Pipa and Dizi upfront during solo, then narration dominant with subtle ambient pads.)\n(Vocal-Perf: Male voice, clear, deep, theatrical narration, spoken with ancient-poetry cadence.)\n沉吟放拨插弦中， 整顿衣裳起敛容。\n自言本是京城女， 家在虾蟆陵下住。\n十三学得琵琶成， 名属教坊第一部。\n\n[chorus]\n(Chords: Gm - Eb - Bb - F - Gm - Cm - Dm - Gm)\n(Transition: Re-entry of full band, strong and urgent, building on previous emotional intensity.)\n(Melodic-DNA: Same as first chorus, but with added layers and intensity, potentially a higher harmony.)\n(Phrase-Structure: Driving and impactful, with full duet harmony.)\n(Contour-&-Range: Expansive, reaching peak notes, then resolving with strong emotional release.)\n(Vocal-Perf: Duet, more powerful and harmonized than before, full chest voice for impact.)\n(Mix: Full, rich sound, vocals layered, Pipa prominent, drums driving, strings swelling.)\n(Inst: Pipa performs a more embellished version of the chorus melody, full rhythmic section.)\n大弦嘈嘈如急雨， 小弦切切如私语，如私语。\n嘈嘈切切错杂弹， 大珠小珠落玉盘，落玉盘。\n\n[outro]\n(Chords: Cm - Gm - Dm - Gm - Dm - Gm)\n(Transition: Gently fades out, Pipa leading, leaving a sense of lingering melancholy.)\n(Melodic-DNA: Slow, lingering notes from the Pipa, with a final descending vocal phrase.)\n(Phrase-Structure: Extended, drawn-out phrases, allowing space for emotional resonance.)\n(Contour-&-Range: Settles into a lower, introspective range, ending on a sustained note.)\n(Vocal-Perf: Duet, soft and melancholic, with a final quiet male spoken line.)\n(Mix: Vocals slowly fade, Pipa becomes more exposed, gentle sustain.)\n(Inst: Pipa plays a final, melancholic motif; subtle strings fade out.)\n同是天涯沦落人， 相逢何必曾相识！\n江州司马青衫湿。",
  "song_id": "02_琵琶行_20260328",
  "_prompt_compressed": {
    "from": 1450,
    "to": 944
  }
}