import themidibus.*;
MidiBus myBus;

void setup() {
  myBus = new MidiBus(this, "MyInput", "MyOutput");
}

void draw() {
  int status_byte = 0xC0;
  // This is the status byte for a program change
  int channel = 0;
  // We'll use channel 0
  int byte1 = 64;
  // This will be the preset you are sending with your program change
  int byte2 = 0;
  // This is not used for program change so ignore it and set it to 0

  myBus.sendMessage(status_byte, channel, byte1, byte2); 
  //Send the custom message

  delay(1000); // Take a break
}