Submit concatenation

The /suno/submit/concat endpoint allows you to concatenate extended music clips into a seamless audio track. This endpoint is specifically designed to merge music segments that were created through the song continuation (extend) process.

⚠️ Important Prerequisite:
Before using this endpoint, you must first call the Generate music clip endpoint with task: "extend" to create an extended music clip. Only the clip_id from an extend task can be used in this concatenation endpoint.

Workflow

Step 1: Generate an extended music clip using /suno/submit/music with the following structure:

{
    "prompt": "[Verse]\nYour lyrics here...",
    "tags": "bass-driven atmospheric heavy metal",
    "negative_tags": "dance",
    "mv": "chirp-v4",
    "title": "City Lights",
    "task_id": "1e338c51-d114-4b82-8cff-e6e6b6fd0096",
    "continue_clip_id": "c80cea18-8dd1-4dd2-a77a-95498276b39a",
    "continue_at": 80,
    "task": "extend"
}

Step 2: After the extend task completes, use the returned clip_id to call this concatenation endpoint.

Step 3: Query the concatenation results using the Single task query endpoint with the returned task_id.

Request Parameters

clip_id (string, required): The clip ID returned from the extend task in Step 1. This ID identifies the extended music segment to be concatenated.

Must be a valid clip_id from a completed extend task

Example: "task_id_after_extension"

is_infill (boolean, required): Indicates whether the task is an infill operation.

Set to true if you want to fill gaps between clips

Set to false for standard concatenation

Default: false

Use Cases

Seamlessly merging extended music clips with their original segments

Creating longer tracks from multiple extended sections

Producing continuous audio from fragmented music generations

curl --location --request POST 'https://api.cometapi.com/suno/submit/concat' \ --header 'Authorization: Bearer ' \ --header 'Content-Type: application/json' \ --data-raw '{ "clip_id": "task_id_after_extension", "is_infill": false }'

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