MiniMusicPlayer2.java

package BeatBox;

import javax.sound.midi.*;

public class MiniMusicPlayer2 implements ControllerEventListener{

	public static void main(String[] args) {
		MiniMusicPlayer2 mini = new MiniMusicPlayer2();
		mini.go();
	}
	
	public void go() {
		try{
			Sequencer sequencer = MidiSystem.getSequencer();
			sequencer.open();
			
			int[] eventIWant = {127};
			sequencer.addControllerEventListener(this, eventIWant);
			
			Sequence seq = new Sequence(Sequence.PPQ, 4);
			Track track = seq.createTrack();
			
			for(int i=5; i<61; i+=4){
				track.add(makeEvent(144, 1, i, 100, i));
				track.add(makeEvent(176, 1, 127, 0, i));
				track.add(makeEvent(128, 1, i, 100, i+2));
			}
			
			sequencer.setSequence(seq);
			sequencer.setTempoInBPM(220);
			sequencer.start();
		}
		catch(Exception ex){
			ex.printStackTrace();
		}
	}
	
	public static MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {
		MidiEvent event = null;
		try {
			ShortMessage a = new ShortMessage();
			a.setMessage(comd, chan, one, two);
			event = new MidiEvent(a, tick);
		} catch (Exception ex) {
		}
		return event;
	}

	@Override
	public void controlChange(ShortMessage event) {
		System.out.println("la");
	}

}