code: func PitchWheelChange(channel, int, val int) *Event {
  	return &Event{
  		MsgChan:      uint8(channel),
  		MsgType:      uint8(EventByteMap["PitchWheelChange"]),
  		AbsPitchBend: uint16(val),
  	}
  }
docs: // PitchWheelChange is sent to indicate a change in the pitch bender.
  // The possible value goes between 0 and 16383 where 8192 is the center.