Add instrumental - MountSea API

Add a backing track under a vocal clip. POST /suno/v2/generate returns { "taskId" }. Poll Get Task Status. Schema: GET /suno/v2/generate/schema?task=add_instrumental.

Parameters

Field	Required	Notes
`task`	Yes	`"add_instrumental"`
`model`	Yes	`chirp-v6` recommended
`clip_id`	Yes	Vocal / a cappella clip
`tags`	No	Style of the bed
`controls.audio_weight`	No	How much of the original vocal to keep, 0–1

Other optional fields: shared list.

Example

{
  "task": "add_instrumental",
  "model": "chirp-v6",
  "title": "With Backing Track",
  "tags": "Pop, Acoustic",
  "clip_id": "e5f4e6d0-0ce1-432a-b2f0-c42860cdd98d",
  "controls": { "audio_weight": 0.7 }
}