Four clean stems
Vocals, drums, bass and other, each as its own lossless WAV, lined up sample for sample so they drop straight into a DAW.
VocalsDrumsBassOtherInstrumental
New in the PXL suite
Split any song into its stems.
Drop in a song and get vocals, drums, bass and everything else as separate files. Made for remixes, acapellas, karaoke and sampling, and it runs on your own computer, so nothing is uploaded and there are no per-song credits.
Late Night Drive.flac3:42 · 44.1 kHz · split in 38 s
Show stemsVocalsvocals.wav
S
Drumsdrums.wav
S
Bassbass.wav
S
Otherother.wav
S
Drop a song. Get four files back.
Features
Studio-grade stems, no studio.
The same kind of model the paid stem sites run, on your own machine and your own GPU.
Fast on your own hardware
Demucs (htdemucs) runs through ONNX Runtime, on the Neural Engine and GPU with CoreML on a Mac and DirectML on Windows. No Python to install, no cloud queue.
Any length
Long mixes and DJ sets are split in overlapping chunks and blended back together, so memory stays flat and there are no seams.
Drop anything
MP3, WAV, FLAC, M4A and the audio from video files. Drop a whole folder to split an album.
And a CLI
Script it, batch it, put it in a pipeline.
$ stm split song.mp3
How it works
Three steps, no settings.
The defaults are the good ones. Open the advanced panel only if you want to.
Drop a song
Drag a file or folder onto the window, or use the CLI.
Stm splits it
The model runs locally, chunk by chunk, using your GPU when there is one.
Use the stems
Four WAVs land in a folder next to the song, named and ready for your DAW.
Private by design
It runs on your computer. That's it.
Stm never uploads your music. The model ships with the app and runs offline, so unreleased tracks stay unreleased.
0.
Accounts
No sign-up, no email. Open it and go.
0.
Servers
The model runs on your machine. Your songs never leave it.
0.
Trackers
No analytics, no crash reporting, no ads. Ever.
Download
Get Stm. It's free.
The latest version. It checks for updates and installs them with one click.The first release is on its way. Watch the GitHub repo or get it through PXL when it lands.
macOS
Apple siliconUnzip and move Stm to Applications. The first time, right-click it and choose Open.
Windows
Windows 10 or 11 · 64-bitRun it. If SmartScreen appears, click More info, then Run anyway.