Stem separation
Split a song into stems online — vocals, bass, drums
Upload a track and get four WAVs: vocals, drums, bass and everything else. Demucs neural network, server-side processing in a couple of minutes, no DAW or plugins.
Split my track →How it works
- Upload your track — WAV, FLAC or MP3 up to 200 MB in the app.
- Press 'Split into stems' — a card in the PRO modules block. Processing ≈1.5× the track length; under load you see your queue position and ETA.
- Download the zip — four WAVs: vocals, drums, bass, other. The archive is kept for 24 hours.
- Price — 1 token, charged only after successful separation. Failures cost nothing.
Honest about quality: neural separation is not the original multitrack. Dense mixes may show light 'musical noise' in quiet parts of stems. Great for instrumentals, remixes, sampling and learning parts; a full rebuild needs the source files.
Two modes to choose from
- All tracks — vocals, drums, bass and other: four WAV files for mixing and remixing.
- Vocals and instrumental — the voice on its own, the backing track on its own. One run gives you both: an a cappella and a karaoke-ready instrumental.
What stems are used for
- Instrumental / acapella — remove vocals for covers and karaoke, or keep only the voice.
- Remixes and mashups — kick and bass separate from the harmony.
- Learning parts — hear the bass line or drums without the rest of the mix.
- Stem mastering — per-track processing: we also offer stem mastering.
See also: AI separation artifacts explained · Audio restoration · Pricing