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POST
Speed Adjustment
You can also submit through the unified task endpoint POST /v1/task/submit with model set to suno/adjust-speed and the parameters inside input. Both behave and bill the same.
When the task succeeds, data.musics holds the tracks it produced.
string
required
Track ID. Pass it to extend, cover, stem separation, export and other follow-up actions.
string
Title.
string
Style tags.
string
Lyrics. Instrumentals do not include this field.
string
Audio URL, downloadable directly.
string
Cover image URL.
string
Large cover image URL.
string
Video URL. Omitted when there is no video.
number
Duration in seconds.

Authorizations

Authorization
string
header
required

Send your API key in the Authorization: Bearer YOUR_API_KEY header.

Body

application/json
music_id
string
required

Source Track: The track to work on. Use the music_id from an earlier result.

title
string
required

Title: Track title, up to 80 characters.

keep_pitch
boolean
default:false

Keep Pitch: Keep the original pitch while changing speed. Off lets pitch shift with speed.

speed_multiplier
number
default:1

Speed: Playback speed multiplier between 0.25 and 4. 1 is original speed.

notify_hook
string<uri>

Notify hook: when the task ends, the same content as the fetch result is POSTed to this URL (a public http / https URL). Omit it to poll instead.

Response

OK

code
enum<string>
required
Available options:
success
data
object
required
message
string