{
  "audio_url": "<source audio; see input-provenance.json>",
  "edit_mode": "remix",
  "original_tags": "simple synthetic sine melody, C major, instrumental",
  "tags": "warm acoustic guitar, light bass, brushed percussion, instrumental",
  "lyrics": "[inst]",
  "number_of_steps": 12,
  "seed": 20261024
}