This disclosure relates generally to electronic musical instruments, systems, and methods. More particularly, this disclosure relates to electronic percussion instruments such as tom toms, snare drums, bass drums, cymbals, and hi-hats, and assemblies of instruments (e.g., percussion instruments), such as drum sets. Some cymbals and hi-hats according to the present disclosure can be used in conjunction with a traditional acoustic metal cymbal. This disclosure also relates generally to devices and methods for operating electronic musical instrument systems including one or more musical instruments and a hub, and particularly to systems including wireless communication between the instrument(s) and hub. Various devices and methods are described for operating the system, including various operational modes of the devices, and including methods and techniques for connecting the devices, improving communication speed and robustness, and conserving power.