Coolo AI

Coolo AI is a free online audio tool focused on splitting and cleaning music. Its best-known job is vocal removal: you upload a song and it produces a karaoke-style instrumental track. It goes further than that, though, and can separate individual instruments such as drums, bass, and guitar, and split lead vocals from backing vocals, which is useful for remixing and for studying how a song is built. It also removes background noise and reverb or echo, and it detects a track's BPM and pitch. Everything runs in the browser, supports several audio formats, and outputs high-quality lossless files. The whole tool is free, with no usage limits stated, which makes it easy to try on a single track or a whole batch.

- Remove vocals to create a karaoke or instrumental track.

- Separate drums, bass, guitar, and other instrument stems.

- Split lead vocals from backing vocals for mixing.

- Detect BPM and pitch, and clean noise, reverb, and echo.

- Music producers who need stems for remixes.

- DJs who check BPM to line up smooth transitions.

- Teachers who show students the structure of a song.

- Karaoke fans who want instrumental versions to sing along.

The tool is free now, but free access and the feature set can change over time, so confirm current limits before you build a routine on it. Separation quality depends heavily on the source recording, and dense or heavily produced mixes can leave artifacts or bleed between stems, so results are not always studio-clean. Splitting a copyrighted song and reusing the stems can raise licensing issues, so use it on music you own or have the right to edit, and respect copyright when you publish. Always check the output before you rely on a stem for a live set or a release.