Vocal Remover (Separate Voice from Music)
A web tool that uses AI to split an uploaded song into vocals and instrumental. You get two tracks: a karaoke version without vocals and an acapella version with the voice isolated. The site says processing usually takes about 10 seconds.
How to try it
Upload an audio file with "Select file" and after a moment two tracks appear, each of which you can play or download. The same site also offers pitch change, tempo finder, cutter, joiner, and recorder tools. The basic function is free, while the newer improved algorithm is available to subscribers only. Korean is supported.