Please use Google Chrome Web browser!
If you're a late comer to a jam and your instrument does not seem to sound, change your kit (via drop down menu, if option available) and add notes
If you experience hanging notes or other sound glitches just refresh your Webpage (ctrl+r on desktop browsers) if you're NOT the one running the main room
If in network/global multiplayer context make sure each participant went through step 1) before EVER launching step 2) (which only 1 person should do)
if on mobile (or other reduced width screen) turn device view from portrait to landscape