AI Music Extend

If you searched "AI music extend," you probably have a track that ends too soon and want it to run longer without an obvious loop. This tool sets a song to the exact length you choose by repeating and stitching its own sections, placing the joins on detected beats so the longer version holds together.

Open the editor in your browser, then upload an audio file. It analyzes the track and marks its beats and section boundaries. Type the new length you want, longer than the original, and it extends the song to hit that time, choosing repeat points that line up rhythmically instead of cutting mid-phrase. Play it back and download the result. Common formats like MP3 and WAV work.

One honest limit: it does not generate new melody. It rearranges and repeats the music you give it, so it works best on a track with a steady groove or repeating sections. A single continuous part that never repeats has little to draw from.

Typical uses: stretching a 90-second instrumental to fill a four-minute slideshow or workout video, or extending a short intro or background loop for a stream or performance so it lasts until you are done.

Does the result sound looped? Because the joins land on beat boundaries rather than random points, it sounds far more natural than pasting the file end to end, though very repetitive source music can still feel repetitive.

The same editor can also shorten a song or trim sections if you need to go the other way.