Fourhands is a P2P piano

  1. Share the URL with another player
  2. Plug in a MIDI keyboard
  3. Click to manually enable audio
  4. You should be able to hear your own playing as well as the other player in the room
  5. See this page for more samples
Release: Gain: Decay:

Release: Gain: Decay:


Release: Gain: Decay:


No MIDI device detected. Try refreshing or use the keys ASDFGHJK.
No peer connected.

For seamless jamming, one-way time of 20 ms or less is ideal. Typically this can be achieved on wired connections for fairly nearby players (within 35 miles / 50 km).

Round trip time (ms): 
Est oneway time (ms):