What is stem separation?
A stem is an isolated component of a recorded song — just the vocals, just the drums, just the bass. Producers and mixing engineers have worked with stems for decades, but until recently you needed access to the original multitrack session files to get them. Stem separation reverse-engineers a finished stereo mix back into those components — giving anyone access to stems from any song they own.
Why Stemulator
Most stem separators were built for a single use case: pulling vocals off a track for karaoke. Stemulator was built for musicians, producers, and DJs who need every stem to be usable in a real session. That means:
- No muddy low-mid bleed between bass and kick
- Drum splits that preserve the original groove instead of smearing it
- Individual instrument isolation — not a catch-all "other" bucket
- Lossless WAV or AIFF export, ready to drop into Ableton, Logic, FL Studio, or Pro Tools
Real-world use cases
- Producers — sample, flip, and remix tracks you own
- DJs — build live mashups with independent vocal/instrumental control
- Musicians — loop the drums, learn the guitar part, transcribe the bass
- Audio engineers — recover stems when original session files are lost
- Video editors — duck vocals under dialogue, isolate music beds
- Educators — teach arrangement by showing one instrument at a time
Supported formats
Upload MP3, WAV, FLAC, M4A, AAC, OGG, or WMA. Download stems as WAV or AIFF for lossless quality, or MP3 for smaller files. All processing happens on our GPU cloud — your laptop stays cool.