Coolo AI

Coolo AI is an audio toolkit organized around one core capability: source separation. Most of the tools on the platform are variations of the same idea applied to a different goal. Vocal removal gives you a karaoke or practice backing track, the stem splitter breaks a mix into individual instruments, and the lead-and-back splitter isolates layered vocals so you can remix or rebalance them. The site supports both audio and video input, so a clip can be processed without a separate conversion step.

Beyond separation, the suite covers the cleanup and analysis tasks that usually follow. A noise remover targets environmental sound, traffic, and hum while trying to keep natural vocal quality, and echo and reverb removal helps rescue recordings made in untreated rooms. Enhancement tools are pitched at speech and podcasts, which is a slightly different listener than the music-focused tools. Analysis tools round it out: key and BPM detection for DJs and producers, audio-to-MIDI conversion for taking a part into a DAW, a pitch changer for matching a vocal range, and trimming for the sections you actually need.

The platform positions itself for a broad set of users rather than one niche. Singers and vocal coaches use it for practice tracks, producers use stems for remixing, DJs use them for mashups and transitions, and content creators use it to strip vocals from background music. A mobile app on iOS and Android means a project started in the browser can continue on a phone, and the interface is available in a dozen or so languages.