Upload a track you own or may use, choose where to extend it, and let AI write a new intro or outro in the same style.
Drop in an MP3, M4A, WAV or FLAC file up to 50 MB, or pick a song from your library. The original file is never changed; the extension is saved as a new version.
Pick Add Intro to write new music before the start, or Add Outro to continue after the end. With Suno models you can instead choose the exact point on the waveform to continue from.
Choose a model, optionally add lyrics for the new section, and select Extend Track. The credit cost is shown on the button before you start.
The model listens to your track, picks up its tempo, key, instruments and vocal style, and generates new music that continues from the start or end. Unlike looping, it writes a new section rather than repeating an old one. That makes it an AI song extender rather than a loop tool, and it runs in your browser, so you can extend music online without a DAW.
| Model | Credits | Where it extends | New lyrics |
|---|---|---|---|
| Suno V6 / V5 | 6 | From any point you pick on the waveform | Up to 5,000 characters |
| Suno V4.5 / V4 | 4 | From any point you pick on the waveform | Up to 5,000 characters |
| Mureka V8 | from 6 | Intro or outro | Up to 3,000 characters |
| WaveSpeed ACE-Step Audio-to-Audio | from 1 | Intro, outro or both, up to 105 seconds each | Not used |
Use Suno when the new part needs vocals that continue the song. Use ACE-Step for a quick, low-cost instrumental intro or outro.
Want a different take on the whole song instead of a longer one? Try the AI Song Remixer. Need a brand-new track? Start in the AI song generator.
Useful when a hook, loop, or intro works but the edit needs more runway for a CTA, transition, stream bed, or game scene.
Use case example
Script to publishable hook
Describe the pacing of a Shorts script and get original background tracks to cut around, instead of searching stock libraries for music that is safe to use.
Shorts-ready track
A 30-second track to edit around, with license status shown before export.
Use case example
Game scene to loop
Describe a menu screen or a boss fight and get original loops that give a prototype its own sound, instead of free asset-pack music.
Prototype audio
A menu loop and battle cue ideas to test in the build.
Use case example
Show concept to intro music
Describe the tone of the show in plain English and get an intro that sounds like the show rather than a template, ready to reuse every episode.
Audio identity
Intro, outro and segment bumper options in the same style.
Upload the song, choose Add Intro or Add Outro (or a continuation point with Suno), pick a model and select Extend Track. The new section is generated in the same style and saved as a new version.
New accounts get 8 free credits without a credit card. An ACE-Step extension starts at 1 credit and a Suno extension costs 4 to 6, so you can try it for free.
The models are built to continue the tempo, key and sound of your track, and most results join smoothly. Listen to the join before you download, and regenerate if it is not seamless.
Yes, if you have the rights to the audio. Upload the file like any other track; Suno models are available for the extension.
MP3, M4A, WAV, FLAC and other common audio formats, up to 50 MB.
Only with permission from the rights holder. Extending a commercial release you do not own creates a derivative work you are not allowed to publish.
Updated October 18, 2026 · Written and reviewed by the Songluna AI team
New accounts get 8 free credits. No credit card required.
