Separate Stems Online with AI
Use Defyaudio to separate stems from any song directly in your browser. Powered by Demucs AI, our tool can separate instruments — vocals, drums, bass, and more — with professional quality. Your audio files never leave your device, keeping your music 100% private.
How to Separate Stems Online
Separating stems with Defyaudio takes just a few clicks. No software to install, no file uploads.
- 1
Open the stem separator
Go to the Defyaudio homepage and select the Stem Splitter tool from the toolbar.
- 2
Upload your audio file
Drag and drop your song or click to browse. MP3, WAV, FLAC, OGG, M4A and AAC are all supported.
- 3
Choose your separation mode
Select a 2-stem split (vocals / accompaniment) or a 4-stem split to separately extract vocals, drums, bass, and other instruments.
- 4
Run the AI separation
Click Separate. Defyaudio's AI processes your file locally — no upload to any server, no queue to wait in.
- 5
Download your stems
Preview each separated stem in the browser, then download the ones you need in high-quality WAV format.
AI Separate Instruments — What You Can Extract
Defyaudio uses Demucs, Meta's open-source AI model, to separate instruments with state-of-the-art accuracy. Here is what you can isolate from any mixed track.
Vocals
Isolate the lead and backing vocals from any song. Perfect for creating karaoke tracks or acapella recordings.
Drums
Extract the full drum track — kick, snare, hi-hats and cymbals — for sampling, practice, or remixing.
Bass
Separate the bass line from the rest of the mix. Ideal for transcription, learning, or building a new arrangement.
Other instruments
Get everything else — guitars, keys, synths, strings — as a clean stem separate from vocals, drums and bass.
Separate Stems Free — What's Included
Defyaudio's separate stems free tier gives you full access to the AI separation engine with no watermarks on your output.