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How AI stem separation works.

A finished song goes in. Estimated sources come back out, on their own lanes, ready to preview and export.

  • drums
  • bass
  • vocals
  • guitar
  1. 01

    Submit your audio

    Paste a link to a public YouTube video or upload an audio file. ytstems validates the source, reads the audio, and prepares it for separation. Tracks can run up to 15 minutes.

  2. 02

    Tracks get isolated

    The model you selected estimates each source from the finished mix. The progress log reports the real processing stages while the job runs; available stems depend on the model and the recording.

  3. 03

    Preview and download

    The stems open in the browser mixer. Preview each lane, set levels, solo or mute, then download an individual track, every stem as a ZIP, or a WAV render of your mix.

What separation can and cannot do.

Model choice changes the available stems

Different separation models target different source groups. Common outputs are vocals, drums, bass, guitar, piano, other, and instrumental — but no model guarantees every instrument its own lane, and some fold whatever is left into an other stem.

Separation estimates sources from a mix

A finished song does not contain its original studio tracks. The model estimates what each source probably sounded like, so dense arrangements, heavy reverb, and overlapping frequency ranges can leave audible bleed or artifacts.

Build your own mix, not just listen to ours.

Solo, mute, and balance the available stems in the browser. Download one stem, all of them as a ZIP, or export a custom WAV mix for rehearsal and practice.

Start mixing your own track

Common questions

  • Paste a link to a public YouTube video, or upload an audio file (MP3, WAV, FLAC, M4A and other common formats). We read the audio and prepare it for separation.

  • Processing time varies with track length, model choice, and available compute. The progress log shows each real processing stage while your job runs.

  • A set of isolated tracks (vocals, drums, bass and more) that you can preview in the in-browser mixer and download individually.

  • A free account takes about 30 seconds and unlocks more: 5 extra separations a month (10 total instead of 5), up to 40 saved mixes you can reopen and share anytime, stems that stay after guest files expire, and your own @handle shown on every mix you share. There are no paid tiers — every account is free.

Need a specific workflow? Try the vocal remover, learn how to split songs into instrument tracks, or review the FAQ.

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