Stem Isolator

Turn any tab into a private four-stem mixer for karaoke, instrument practice, rehearsals, and focused music study—fully offline.

Stem Isolator transforms the music playing in your active browser tab into a live four-channel stem mixer. Independently control Vocals, Bass, Drums, and Other without uploading audio or leaving your browser. Whether you are singing karaoke, learning an instrument, rehearsing a difficult section, or studying how a song is arranged, Local Stem Isolator helps you hear exactly what you need. WHAT YOU CAN DO • Lower or mute vocals for karaoke and singing practice • Create a live instrumental or custom backing track • Remove drums while practicing your own drum part • Reduce bass for bass guitar practice • Isolate vocals to study melodies, harmonies, and pronunciation • Build an acapella-style mix by muting the instrumental stems • Focus on individual instruments while learning or transcribing a song • Adjust all four stems in real time with simple volume controls BUILT FOR MUSICIANS Use Local Stem Isolator as a live vocal remover, music splitter, stem separator, instrumental maker, or practice-track mixer. It is useful for singers, guitarists, bass players, drummers, pianists, producers, DJs, music teachers, and anyone learning a song by ear. PRIVATE AND FULLY OFFLINE All audio separation happens locally on your device using a bundled small AI model. Your tab audio is not uploaded, recorded, stored, or sent to a cloud service. No account is required. HOW IT WORKS Open a tab containing the music you want to hear. Click the extension and select “Start Listening.” Wait while the first audio segment is analyzed. Adjust Vocals, Bass, Drums, and Other to create your preferred mix. The original tab audio remains audible while the first stem buffer is prepared. When processing is ready, the extension switches to the separated four-stem mix. Stem Isolator is designed for real-time listening and practice. It does not download, save, or export copyrighted tracks.