StemRoller is a free application that allows you to separate vocal and instrumental streams from any song with a single click. The tool uses Facebook’s state-of-the-art Demucs algorithm to demix songs and integrates search results with YouTube.
Simply type the title of any song into the search bar and click the “Split” button that appears in the results. The program will find the song online and split it into four tracks: vocals, drums, bass, and everything else.
You’ll need to wait a few minutes for the split to complete. Once the tracks are extracted, you’ll see an “Open” button next to the song. Click on it to access them.
A separate instrumental will also be created for your convenience, containing all the non-voice tracks mixed into one track. The developers recommend using the latest current version of the release. The source code of the project is available on GitHub