Vocal Remover: Make a Karaoke Track

Karaoke and cover singers use the instrumental to sing over. Reels, Shorts and TikTok creators use it as a backing track, and musicians use it to practise a part or learn a song by ear. The vocals-only track (an acapella) is useful for remixes, transcribing lyrics, studying a singer's phrasing, or cleaning speech out of a music bed.

Most vocal removers upload your song to a server, cap you at a few songs a day, or ask for an account before you can download. This one runs on your own device, so it works on private demos and unreleased music too.

The tool uses an MDX-Net model from the open-source Ultimate Vocal Remover project. The song is turned into a spectrogram a few seconds at a time, the model predicts which parts are voice, and those parts are turned back into audio. The instrumental is the original song minus the vocals. Everything runs in your browser with ONNX Runtime, on your graphics card through WebGPU where available, otherwise on the processor.

Results are best on studio recordings with a clear lead vocal. Heavy reverb, backing choirs, live recordings and instruments that sit in the same range as the voice (like a lead violin or saxophone) can leave faint traces. This is a compact model chosen so it can run on ordinary laptops; large server models separate a little more cleanly.