AI Extend Audio

This tool makes a track longer when it falls short of the time you need. You give it a target length past the original, and it rebuilds the song to reach that duration by repeating whole sections and beats at points where the music naturally turns over. The longer version still plays as one continuous song, not an obvious loop or a hard splice.

How it works: upload an MP3 or WAV. The tool finds the beats and section boundaries. Set the new length, longer than the original. It picks repeat points that line up with the music, plays the result, and you nudge those points if a join sounds off. Then export the extended file.

A common case: a 90-second clip needs to cover a three-minute slideshow, video, or walk-on, and cutting the visuals isn't an option. Stretching the audio to the slot is cleaner than fading the same short clip on a loop. It also helps when an intro or background bed runs out before your segment does and you need it to land on a precise mark.

Worth knowing: it lengthens by extending the existing recording, so it works best on music with a steady structure. It doesn't generate new melodies or invent extra verses. The longer track is the same song made longer.

Does it sound stretched or slowed down? No. It adds time by repeating real sections, not by slowing playback, so the tempo and key stay exactly as recorded. No signup or install.