Music AI Extender

This tool makes a song longer to hit a length you choose. It analyzes the track, finds the beats and the boundaries between sections, then repeats and rejoins those sections on the beat. The result reaches your target time and still plays as one continuous track, instead of looping the whole thing or fading out the end.

To use it, open the editor and upload an audio file. The tool marks the beats and sections, you set a new length longer than the original, and it builds the extended version. Play it back, nudge the cut points if you want, then download it. It works in your browser with common files like MP3 and WAV.

The usual reason to extend a song is video. If your edit or slideshow runs four minutes but the track is three, stretching the music to match saves you from cutting footage or letting the audio drop out early. It also helps for walk-on music, performances, and presentations that have to fill a fixed amount of time.

Worth knowing: this reuses the recording's own parts, so the longer version stays true to the original song. It does not invent new musical material the artist never played. If you want a faithful, longer cut of a track you already have, that is usually the point.

Will it sound choppy? Because the joins land on beats and section edges rather than random spots, a careful extension holds together. Songs with clear, repeating sections give the cleanest result.