How to write an action function

include arguments for player and current beat

(player,beat) ⇒ {do something here}

(player,beat) ⇒ {myAction()}

store them in the actions property of the MusicalEnvironment as a key with the action name and the function as the value.

e.addAction('actionName',action function)

Because JavaScript is single threaded, a computationally heavy action function could block the next events, and that's especially weird for events that are supposed to be simultaneous or temporally near.

needs a WebSocket tutorial