AI Music Extender Free

Audjust makes a song longer without an obvious loop or a jarring repeat. It analyzes the track for beats and section boundaries, then adds length by repeating and rejoining whole musical sections on the beat, so the longer version still sounds like the original recording. It runs in your browser, with no signup and no install, and reads common files like MP3 and WAV.

To use it, open the editor and upload your audio. Audjust shows the track on a timeline. Type the length you want or drag the end to extend it, preview the result, then export the longer file. The same editor can also shorten or trim a track, so you can land on an exact duration from either direction.

A common reason people search for this: you have a 90-second song but a three-minute slideshow, dance routine, or background bed to fill. Rather than fading out and restarting, you extend it to the exact time so the audio runs continuously underneath. It also works for stretching a short intro or outro to cover a longer scene.

Worth knowing before you start: extending works best when the song has clear, repeating parts, like a chorus or a steady beat. Tracks that constantly change with little repetition give the tool less to work from, so the added length may sound less convincing.

The question most people have is whether it writes new music. It doesn't. It rearranges and repeats the existing parts of your own track to reach a longer length, so nothing is invented and the sound stays true to the original.