Gesture Synth plays with motion.

The fastest way to understand Gesture Synth is not to memorize every gesture at once. Start with one left-hand degree and one right-hand quality until a stable chord sounds. Then practice a short I-IV-V-I loop while keeping the right hand unchanged. This separates harmony selection from voicing and makes it much easier to see which hand caused a missed transition.

After the degree sequence is reliable, add major and minor wrist context, then experiment with inversions and seventh chords. Volume and filter movement come last. Treating expression as a separate layer keeps the camera-tracking problem small enough to diagnose while you are still learning the instrument.

Gesture Synth is designed around chord progressions rather than note-for-note score playback. A chord chart can be converted to Roman numerals such as I-V-vi-IV, then performed in any supported key with the same degree sequence. This makes the hand vocabulary reusable instead of forcing you to learn a different physical gesture for every chord name.

If the camera recognizes one hand inconsistently, fix framing and lighting before changing musical settings. Keep wrists and fingertips inside the frame, leave space between both hands, and hold a candidate gesture briefly. The dedicated troubleshooting and compatibility guides separate camera permission, landmark recognition, browser audio, and gesture-classification problems so you can test one cause at a time.

The browser-first design also keeps setup lightweight: there is no account to create, no plug-in to install, and no MIDI device required for the core experience. A webcam supplies the motion input and the browser generates the sound. That makes Gesture Synth useful as a quick practice instrument, a way to explore harmony through movement, or a technical demo of how hand-landmark tracking can become a musical interface without sending the live camera feed to an application server.

The documentation follows the same principle: each guide answers one concrete question, from camera permissions to chord mapping, so you can move from setup to practice without searching through unrelated product pages.