Stem Separation splits a finished song into four tracks — vocals, drums, bass, and everything else (guitars, keys, synths, strings) — so you can remix it, practise along with one part muted, sample a drum break or study how a mix was built. It runs Demucs, the same open-source separation model behind the Vocal Remover, in its four-stem mode.
The separation runs on a cloud GPU, so the audio is uploaded; files over 4 MB are first re-encoded in your browser to a 96 kbps MP3. The result is a short list of download links, one per stem, rather than a single file. Those links are temporary — save each stem soon after the run finishes.
How to use
Sign in and choose a song — MP3, M4A, WAV or another common format.
Start the run and keep the tab open; a full song usually takes a minute or two.
Open each link in the result list and save the four stems to your device.
FAQ
Which stems do I get?
Four: vocals, drums, bass and 'other', which holds everything that is not voice, drums or bass — guitars, piano, synths, strings. Guitar and piano are not split out on their own.
Why do I get links instead of files?
Each stem is a separate audio file, so the result lists one download link per stem. The links come from the processing service and expire, so download what you need right away.
How clean are the stems?
Drums and bass usually come out strong, and vocals are good on clean studio mixes. Heavy reverb, distortion and dense arrangements leave some bleed between stems, and the 'other' track is the least tidy because it collects everything else.
What does it cost?
It is a Plus tool: included in Plus and Pro, and free accounts can try it once a day. Each run uses 5 AI credits; if the job fails, the credits are refunded automatically.