code: func ControlChange(channel, controller, newVal int) *Event {
  	return &Event{
  		MsgChan:    uint8(channel),
  		MsgType:    uint8(EventByteMap["ControlChange"]),
  		Controller: uint8(controller),
  		NewValue:   uint8(newVal),
  	}
  }
docs: // ControlChange sets a new value for a given controller
  // The controller number is between 0-119.
  // The new controller value is between 0-127.