Practice the song,
not the software.
A browser-native practice toolkit for musicians who learn songs by ear. Loop, slow down, transpose, isolate vocals — all in your browser, no upload required.
No card required. Practice tool stays free either way.
Hear what's actually in the recording
Slow a track to 25% (5% on Pro) without the chipmunk artifacts. Transpose by full semitones or fine-tune in cents — formant preservation keeps vocals sounding like the same singer in a different key. Isolate vocals using a stem-separation model that runs entirely in your browser, not a server you upload to.
Built around how musicians actually practice
Drop named markers as A, B, C — make a multi-section loop spanning whichever ones you want. Keyboard shortcuts for the seek and loop controls so you can keep your hands on the instrument. The waveform is the canvas; the rest of the chrome stays out of the way.
Nothing leaves your browser
The practice tool runs on your device — audio decoding, time-stretching, pitch-shifting, vocal isolation, all in the page. Nothing uploads. Nothing sits on our servers. Chord-chart transcription is the only feature that touches our backend, and even that deletes your audio after rendering by default.
When the defaults aren’t enough
Pro adds chord-chart transcription, a 4-band parametric EQ, sub-quarter speed for the genuinely hard solos, a per-stem mixer, and saved sessions that follow you across devices. Sign up to try the whole toolkit free for 7 days.
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