100% free · no sign-up · runs in your browser

Split any song into six studio stems.

Upload a track and our on-device AI engine separates it into vocals, drums, bass, guitar, piano and other instruments — then mix it live with volume, panning, pitch and tempo controls.

Open the Studio → See how it works

Audio never leaves your device No account needed WAV export included

Everything included

A complete stem studio, not just a splitter

Everything runs locally in your browser — private, fast and free. No uploads, no watermarks, no accounts.

6-stem AI separation

Vocals, drums, bass, guitar, piano and a residual "other instruments" stem — extracted by an on-device spectral AI engine with harmonic/percussive analysis.

Pro mixer per stem

Shape every stem live: volume fader, stereo panning, pitch shift (+/-12 semitones) and independent tempo from 50% to 200%. Mute and solo included.

Loop & regions

Drag on the waveform to set a loop region and practice any section endlessly — perfect for transcribing solos, learning drum parts or crafting DJ edits.

A/B compare

Store two complete mix states and flip between them instantly to compare EQ-style decisions, alternate balances or before/after ideas.

Save projects

Save your whole session — faders, pans, pitch, tempo, loops, both A/B slots and even the audio itself — into one portable project file you can reopen anywhere.

Export your mix

Render your current mix to a 16-bit WAV file with one click — ready for video edits, mashups, karaoke tracks or DJ sets.

The stems

Six isolated layers from one song

Our engine analyzes frequency bands, stereo positioning and harmonic-percussive structure to route every sound where it belongs.

VocalsLead and backing voices, focused on the center of the stereo field in the vocal range.

DrumsKicks, snares, hats and percussion, detected via transient and broadband analysis.

BassElectric bass, synth bass and sub content in the low-frequency band.

GuitarRhythm and lead guitars, typically weighted toward the wide stereo edges.

PianoPianos, keys and mallet instruments in the harmonic midrange.

Other instrumentsEverything else — synths, strings, brass, FX and ambience — so nothing gets lost.

How it works

Three steps to your stems

Upload a song

Drop in an MP3, WAV, FLAC, OGG or M4A — or try the built-in demo track. The file is decoded right in your browser and never uploaded to any server.

AI separates the stems

The on-device engine runs a spectral analysis — harmonic/percussive decomposition, band routing and stereo-position weighting — to split the mix into six stems.

Mix, loop, compare & export

Balance the stems in the mixer, set loop regions, flip between A/B mix states, then save your project or export the mix as a WAV file.

FAQ

Questions, answered

Is it really free?

Yes — completely free with no sign-up, no watermarks and no usage limits. Because all processing happens on your own device, there are no server costs to pass on to you.

Does my music get uploaded anywhere?

No. The separation engine runs entirely inside your browser using the Web Audio API. Your audio files never leave your computer, which makes it safe for unreleased material.

Which formats are supported?

Anything your browser can decode: MP3, WAV, FLAC, OGG, M4A/AAC and more. Exports are rendered to standard 16-bit WAV files.

How long can my song be?

Songs up to around 5–6 minutes work best. Separation keeps six full stereo stems in memory, so very long files may hit your device's memory limit — a warning will appear if a file is too large.

Can I use the stems in my own projects?

The tool imposes no restrictions — but the copyright of the original recording belongs to its owners. Use separated stems only for purposes permitted by the rights holder (covers, practice, remixes you have clearance for, and so on).

Why does pitch control need HTTPS?

Real-time pitch shifting uses AudioWorklet, which modern browsers only enable on secure (HTTPS) pages or localhost. Serve the site over HTTPS and every control is available; on plain HTTP everything else still works.

Ready to hear your song in layers?

Open the studio and split your first track in under a minute — free, private and right in your browser.

Open the Studio →