To extend a song in Suno on the web, find it in your Library or Workspace, open the song’s More Actions (⋯) menu, choose Remix/Edit, then scroll to Extend. Set where the continuation should begin, add lyrics or style details if you want, and select Create. To join the extension to the original, open the extension’s More Actions (⋯) menu, hover over Create, and choose Get Whole Song.
Extend a song in Suno
- Find the song. Locate the song you want to continue.
- Open Extend. Click the triple-dot (⋯) icon to the right of the song name, choose Remix/Edit, then scroll to Extend.
- Choose where the continuation starts. In the Extend window, drag the white arrow to choose how much of the original to keep and where Suno should continue. You can play the song to help choose the point.
- Add guidance (optional). Enter new lyrics or style details if you want to guide the extension.
- Generate and review. Select Create, then listen to the generated extension. If it isn’t the direction you want, try another generation before combining it with the original.
The continuation point sets the boundary between the part of the original you keep and the new section. Choosing an earlier point means less of the original remains before the continuation; choosing a later point keeps more of it. Listen around the transition and choose the point that fits your arrangement.
Join the extension to the original
After choosing an extension you like, open that extension’s More Actions (⋯) menu, hover over Create, and select Get Whole Song. Suno describes this as stitching the new ending to the original track. Listen to the joined version to check that the transition and ending work as intended.
To download a copy, find the completed song in your Library or Workspace, open More Actions (⋯), hover over or select Download, and choose a download option. Available formats depend on your plan and where you use Suno. Suno’s help information says MP3 downloads are available on web and mobile across plans; WAV downloads require Pro or Premier and must be made on suno.com. Mobile downloads default to MP3.
Alternative: Extend in the Song Editor
Suno’s Song Editor guide describes another route: click the + at the far right of the track, enter a prompt to steer the extension, or choose Quick Extend for a continuation. Review the result before using it. This is the Song Editor workflow; the steps above describe opening Extend from a song’s Remix/Edit menu.
Does a production API support song extension?
A Suno interface feature and an API offered by a third-party provider are different routes. The task does not identify a production API provider. A supplied excerpt from SunoAPI.org’s third-party documentation lists an extension endpoint and identifies audioId, model, and callBackUrl as required inputs. That excerpt does not establish whether audioId can refer to a song already in your Suno Library, how to obtain an eligible source ID, or enough of the request and output workflow to give a reliable implementation example. It also does not make this an official Suno API. The available information therefore does not establish a documented API route for extending an existing Suno Library song; check the intended provider’s documentation and access terms before building a production integration.
Quick checklist
- Pick and listen to the continuation point before generating.
- Add lyrics or style guidance if you want to steer the new section.
- Review the extension before joining it to the original.
- Use Get Whole Song to make the combined track, then download it if you need a local copy.
- For API integration, confirm the provider and whether it accepts your source audio; don’t assume a Suno interface feature implies an official Suno API.
Sources
How do I make my song longer? — Suno Help
How do I download songs? — Suno Help
What types of files can I download? — Suno Help