{
  "id": "cozy-jazz-01",
  "title": "咖啡館的空椅 (An Empty Cafe Chair) · 01",
  "genre": "cozy-jazz",
  "genre_label": "Lo-fi / Cozy Jazz",
  "cohort": "controlled",
  "collection_selected": false,
  "variant": "baseline",
  "composition_number": 1,
  "request": {
    "id": "cozy-jazz-01",
    "text": "Instrumental cozy lo-fi jazz, warm electric piano, upright bass, brushed drums, mellow nostalgic late-night cafe, soft swing, subtle tape warmth, 78 BPM, no vocals, no singing. A compact 60 second original instrumental cue, gentle introduction, a coherent middle, and a naturally resolved quiet ending.",
    "lyrics": "[Instrumental]",
    "duration_sec": 60,
    "num_inference_steps": 30,
    "seed": 831001,
    "guidance_scale": 1.7,
    "ar_guidance_scale": 1.5,
    "top_k": 50
  }
}