Make music by waving.

A touchless theremin played with your hands in the air. Your webcam tracks pitch and volume, snapped neatly to a musical scale. No hardware, no install — and free, always.

Always free. If you love it, try SynthViz and AudioWarp.

Play in your browser Try SynthViz

Theremin tracking a hand to play a note, snapped to scale

Wave your hands, make music

Touchless control

One hand sets the pitch; the other sets volume. Pure air — your webcam does the rest.

Snapped to scale

Notes lock to a musical scale and tonic you choose, so it sounds good instantly.

Zero setup

Open the page, allow the camera, play. Nothing to download, nothing to buy.

Theremin is free forever — it's our way of saying hi. See all Roe Apps →

A Roe Apps product support@roeapps.com theremin.live