Stemroller

StemRoller is a desktop application that splits songs into separate audio tracks using AI. The user types a song title into the search bar, and the app finds the song online and separates it into four stems: vocals, drums, bass and everything else. It also produces an instrumental track that mixes all the non vocal stems into one file, which is useful for karaoke, remixing and practice. The separation is based on Demucs, the source separation research project from Facebook. StemRoller is aimed at musicians, DJs, producers and hobbyists who want isolated parts of a recording without working in a digital audio workstation. The app is downloaded and run locally, and the vendor provides a Discord community for questions and bug reports. StemRoller is described by its maker as totally free and open source. No paid plans are offered, and the site asks users who enjoy the app to make an optional donation. Because it finds source audio online from a song title, users are responsible for making sure they have the right to process the recordings they use.