MiniMusicCmdLine.java

import javax.sound.midi.*;

public class MiniMusicCmdLine{
	public static void main(String[] args){
		MiniMusicCmdLine mini = new MiniMusicCmdLine();
		if(args.length < 2){
			System.out.println("Dont forget the instrument and not args");
		}else{
			int instrument = Integer.parseInt(args[0]);
			int note = Integer.parseInt(args[1]);
			mini.play(instrument, note);
		}
	}

	public void play(int instrument, int note){
		try{
			Sequencer player = MidiSystem.getSequencer();
			player.open();

			Sequence seq = new Sequence(Sequence.PPQ,4);

			Track track = seq.createTrack();

			MidiEvent event = null;

			ShortMessage first = new ShortMessage();
			first.setMessage(192,1,instrument,0);
			MidiEvent changeInstrument = new MidiEvent(first,1);
			track.add(changeInstrument);

			ShortMessage a = new ShortMessage();
			a.setMessage(144,1,instrument,100);
			MidiEvent noteOn = new MidiEvent(a,1);
			track.add(noteOn);

			ShortMessage b = new ShortMessage();
			b.setMessage(128,1,note,100);	
			MidiEvent noteOff = new MidiEvent(b,16);
			track.add(noteOff);

			player.setSequence(seq);
			player.start();

		}catch(Exception ex){ex.printStackTrace();}
	}
}