Bellows Pressure
tilt — °  |  roll — °
Tilt or rock device to pump bellows
Oct 4
Stops
Diatonic — C Major

Tap to Awaken

G-Harmonium uses your device's gyroscope to control the bellows. Tilt or rock the device to pump air — just like a real harmonium.

⚠️ Brave Browser detected
Brave blocks motion sensors by default.
To enable: Settings → Site Settings → Motion Sensors → Allow
Or use Space bar / keyboard to play.

iOS shows a system permission prompt. Android gyro activates automatically (except Brave). Desktop: hold Space.