This event is triggered when a controller is changed on any channel (usually MIDI controller change), though some system exclusives can change it too.
The MIDI channel number for this event. Usually it ranges from 0 to 15, but it depends on the channel count.
The MIDI controller number. Ranges from 0 to 127.
The value of the controller.
This event is triggered when a controller is changed on any channel (usually MIDI controller change), though some system exclusives can change it too.