Gesture Synth
gesturesynth.art
Free browser instrument that turns your webcam into a chord pad and theremin. No install, no account.
Description
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Installation
Not sure where to start — ask an assistant to walk you through:
Features
🖐️ Two-Hand Gesture Control
Your left hand selects chords from popular progressions like I · vi · IV · V · ii, while your right hand shapes volume, tone, and octave. This intuitive mapping gives anyone immediate expressive control over live music w
🎼 Dual Instrument Modes
Switch seamlessly between Gesture mode, a continuous chord pad, and Theremin mode, which lets you bend pitch freely. This means one webcam setup can yield two very different musical experiences. Musicians can explore har
🎛️ Three Sound Scenes
In Play mode, choose among Pop Pulse, Soft Ballad, and Retro Night to instantly change the overall sound while keeping the same hand gestures. Each scene provides a distinct vibe and musical palette, allowing performers
Use cases
Play chords using webcam hand gestures
Practice theremin tones with no hardware
Teach music chords with hand gestures
Create ambient music during live streams
Switch sound scenes for performance mood
Make music without buying any instruments
FAQ
Gesture Synth is a free browser-based instrument that uses a webcam to track hand gestures and turns them into live music. It runs entirely on your device, with no install and no account.
It uses MediaPipe Hand Landmarker, a Google open-source machine learning model that runs as WebAssembly inside your browser. Video frames are processed locally.
No. Hand tracking is fully on-device. Frames are processed locally and discarded immediately. No video upload, telemetry, or cloud processing.
In Gesture mode, your left hand picks from I · vi · IV · V · ii progressions, with extra options like VI and VII and wrist tilt for major or minor. In Theremin mode, you can play roughly 65 Hz to 1200 Hz.
Currently optimized for desktop browsers like Chrome and Edge. Mobile support is on the roadmap.
Yes. Gesture Synth is free forever. No subscription, no in-app purchases, no upsells. Just open and play.
Only a computer with a webcam and a supported desktop browser. No MIDI controller or instrument required.
The left hand selects chords from popular progressions. Wrist tilt flips between major and minor, and finger patterns choose chord degrees.
The right hand shapes volume, tone, octave, and chord style. Its height controls volume, and wrist tilt controls tone.
Use the mode switch gesture with your right hand, or switch within the Play interface. Gesture mode is a chord pad, Theremin mode is free-form pitch.
Specs
| Type | Tool |
| Section | Music Generation |
| Pricing | free |
| Platform | Web only |
| Systems | web |
| Hosting | cloud |
| Install | saas |
| Site language | en |