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Add instrumental backing to uploaded music. Only works with uploaded audio, not Suno-generated clips.

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Model

suno-ai/add-instrumental

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Parameters

ParameterTypeRequiredDescription
mvstringYesModel version
clip_idstringYesClip ID from uploaded audio
audio_urlstringNoAudio file URL
gpt_description_promptstringNoSimple mode description
promptstringNoCustom mode prompt
start_snumberNoStart time in seconds
end_snumberNoEnd time in seconds
titlestringNoTitle for result
custom_modelobjectNoRequired when mv is chirp-custom. Inline custom model — { "name": string, "audio_urls": string[] }. See Music Generation › Custom Model

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Example - Simple Mode

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "suno-ai/add-instrumental",
    "input": {
      "mv": "chirp-bluejay",
      "clip_id": "ec0be483-2de2-4abc-a5ce-3d8258f52ed4",
      "gpt_description_prompt": "Hip-hop beats with 808 bass",
      "start_s": 0,
      "end_s": 60
    }
  }'

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Example - Custom Mode

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "suno-ai/add-instrumental",
    "input": {
      "mv": "chirp-bluejay",
      "clip_id": "ec0be483-2de2-4abc-a5ce-3d8258f52ed4",
      "prompt": "Rock guitar and drums with heavy bass",
      "title": "With Instrumental",
      "start_s": 0,
      "end_s": 60
    }
  }'

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Response

{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "abc123def456",
    "status": "pending"
  }
}