---
title: "POST /producer/v1/instrumentals-swap"
method: POST
path: "/producer/v1/instrumentals-swap"
---

# POST /producer/v1/instrumentals-swap

`POST /producer/v1/instrumentals-swap`

Create an instrumental cover of the generated audio

## Request body

- CoverRequest
  - `music_id` string, required — Parent task's musicId
  - `sound_prompt` string, required — Audio prompt, sound_prompt and lyrics_text cannot both be empty
  - `lyrics_text` string, required — Lyrics text, sound_prompt and lyrics_text cannot both be empty
  - `instrumental` boolean — Whether to generate pure music
  - `mv` 'FUZZ-2.0 Pro' | 'FUZZ-2.0' | 'FUZZ-2.0 Raw' | 'FUZZ-1.1 Pro' | 'FUZZ-1.0 Pro' | 'FUZZ-1.0' | 'FUZZ-1.1' | 'FUZZ-0.8' | 'Lyria 3 preview' — Model to use, supported options listed above
  - `title` string — Title
  - `cover_art_url` string — Cover URL
  - `seed` string — Random seed
  - `lyrics_strength` number — Lyrics strength, optional 0-1
  - `sound_strength` number — Audio prompt strength, optional 0.2-1
  - `weirdness` number — Style weirdness, optional 0-1
  - `is_storage` boolean — Whether to save
  - `hook_url` string — Callback notification URL. The data returned is consistent with the task result query response

## Response `200`

Request successful

- object
  - `status` string, required
  - `message` string, required
  - `data` object, required

## Other responses

- `400` — Parameter error
- `401` — Authorization failed

---

[API](https://skmtc.net/ttapi/apis/flowmusic-api-docs.md) · [All operations](https://skmtc.net/ttapi/apis/flowmusic-api-docs/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ttapi/flowmusic-api-docs/versions/f27f8a59dbd0/schema)