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[] eventsIWant = {127};
            sequencer.addControllerEventListener(this, eventsIWant);

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

    public 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 e) { }
        return event;
    }
}