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Full-quality files welcome: WAV, FLAC, MP3, M4A.
Stem splitter
Split a full mix into usable stems for remixes, mashups, sampling, and DJ sets. The free path provides a 30-second excerpt without a credit; starting a paid priority job reserves one credit before processing.
Separation job
Outputs vocals, drums, bass, and other.
Uploads go to R2, processing runs through Replicate Demucs, and downloads unlock after sign-in.
Full-quality files welcome: WAV, FLAC, MP3, M4A.
Vocals, drums, bass, and other, each as its own file.
Preview every stem free. Unlock lossless downloads with credits.
These licensed source recordings were AI-separated by StemSlice and excerpted to 30 seconds. User uploads are private and never published.
Pop / 0:30
Switch tracks to compare the same point in the 30-second excerpt.
"Bummin on Tremelo" by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0.
Creative Commons Attribution 4.0 license · AI-separated by StemSlice and excerpted to a 30-second preview.
Contemporary / 0:30
Switch tracks to compare the same point in the 30-second excerpt.
"Ether Vox" by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0.
Creative Commons Attribution 4.0 license · AI-separated by StemSlice and excerpted to a 30-second preview.
Jazz / 0:30
Switch tracks to compare the same point in the 30-second excerpt.
"Secret of Tiki Island" by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0.
Creative Commons Attribution 4.0 license · AI-separated by StemSlice and excerpted to a 30-second preview.
Rock / 0:30
Switch tracks to compare the same point in the 30-second excerpt.
"Exhilarate" by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0.
Creative Commons Attribution 4.0 license · AI-separated by StemSlice and excerpted to a 30-second preview.
Electronica / 0:30
Switch tracks to compare the same point in the 30-second excerpt.
"Townie Loop" by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0.
Creative Commons Attribution 4.0 license · AI-separated by StemSlice and excerpted to a 30-second preview.
Jazz / 0:30
Switch tracks to compare the same point in the 30-second excerpt.
"Faster Does It" by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0.
Creative Commons Attribution 4.0 license · AI-separated by StemSlice and excerpted to a 30-second preview.
Audition transitions and low-end sections before committing a stem export to a live set.
Priority queue for paid jobs and batch-friendly pricing, so weekend prep doesn't mean waiting in line.
Audition the free opening excerpt before choosing a full export for a club, stream, or live set.
WAV and FLAC downloads that hold up to pitching, warping, and mastering chains.
Buy a pack, use it whenever. No subscription, no monthly drain.
Reference files, synchronized starts, and one approved archive keep collaborators aligned.
Split the track before building the final edit, then align the stems to the same downbeat in the DAW. Keep the untouched mix on a reference channel, test vocal-only transitions, and automate drums or bass rather than printing changes immediately. Four synchronized parts make it easier to revise a mashup when a transition works in headphones but not on a full-range system.
AI stems are designed to recombine, but lossy source material and independent processing can expose small artifacts. Sum all stems and compare them with the reference, inspect kick and bass transients, and avoid normalizing every file independently before alignment. For performance use, render a short test section through the same limiter and playback chain planned for the set.
Queue the most important songs first and judge previews before exporting everything. Original-format ZIPs avoid extra conversion, while long WAV or FLAC batches require more server time and much larger downloads. Keeping one approved export per job and format reduces repeated work and gives a predictable archive for collaborators.
Use a stable project name, tempo note, source reference, and chosen export format when preparing a set. Reusing the cached archive avoids unnecessary conversions and prevents collaborators from editing slightly different versions. For long FLAC or WAV jobs, prepare the archive before the rehearsal or performance window.
1 credit unlocks one full 4-stem download. Previewing, listening, and failed processing jobs do not consume credits.
$4.9
5 credits / one-time
Buy Credits$9.9
30 credits / one-time
Buy Credits$19.9
60 credits / one-time
Buy CreditsAnswers for free limits, formats, privacy, copyright, and download quality.
None — they're synonyms. Both split a song into individual tracks like vocals, drums, and bass.
Previews are free (3 uploads a day). Full-quality downloads cost 1 credit per song, with packs from $4.9. No subscription required.
Plenty of DJs and producers do exactly that. Keep in mind the stems still belong to the original rights holders — commercial releases need permission.
Four: vocals, drums, bass, and other instruments.
Free tier covers songs up to 6 minutes. Paid users can split tracks up to 20 minutes and 500MB.
Processing varies with song length, format, and queue load. Paid jobs use the priority path when it is configured.
They're encrypted in storage, set to expire 24 hours after job creation, and then removed by automated cleanup. Nothing is shared or made public.
Extracted stems remain the property of the original rights holders. Commercial use requires their permission.