Stem separation

Drop a song to split into stems, or select a file. It opens in the studio, ready to export.

WAV · AIF · AIFF · MP3 · M4A · FLAC · OGG

How to split a song into stems

Upload a mix and get isolated tracks back: vocals, drums, bass and the melodic parts, each as its own file. What makes this different from a standalone splitter is where the stems go next: straight into a real session, on the grid, with the tempo and key already worked out.

  1. Add your song: Drop a WAV, AIFF, MP3, M4A, FLAC or OGG: a finished mix, a rough bounce or a phone recording.
  2. It comes apart: BS-RoFormer separates vocals, drums, bass, guitar, keys and the rest; the kit can go further into kick, snare, hi-hat, toms, ride and crash.
  3. Take the stems: Full-length files, one per part. Download them, or carry straight on into transcription or a DAW session.

More ways to work with your music

Try our online tools to separate, transcribe and convert. Doseedo does it all.

Questions about the stem separation converter?

We have answers.

How many stems do I get?

Vocals, drums, bass and the remaining melodic material, with further splits available depending on the source. A sparse arrangement separates further and more cleanly than a dense one.

Does it work on a live recording?

Yes, though bleed between sources makes it harder: a room recording where every mic hears every instrument is the worst case for any separator, including this one.

Can I get the stems as MIDI instead of audio?

Yes. Transcription runs per-stem, so you can take the separated parts through to notes rather than audio. That is a different route through the same pipeline.

Try our free stem separation converter

  • What you get back

    A separated mix comes back as individual audio files, one per source. Vocals and drums are the cleanest; they are the most distinct in a mix and the model has the most to work with. Bass is reliable. Guitars and keys are harder, because in a dense arrangement they overlap in both frequency and time, and what you get is a best effort rather than a surgical extraction.

  • Why the separator is not demucs

    A lot of tools in this space wrap the same open-source model. This one runs a RoFormer-based separator, which is a transformer operating on the spectrogram rather than a convolutional network on the waveform. In practice the difference shows up on the hard material: dense mixes, heavy compression, and vocals that sit inside a wall of guitars.

  • From stems to a finished session

    Because separation here is a stage in a pipeline rather than the product, the same upload can come back as a finished session file instead: tracks laid out, tempo detected, each stem on its own named track. That is the audio-to-session route, and it is the one most people actually want.

Try these Doseedo tools