import javax.sound.midi.*;
public class Helirida{
  public static void main(String argumendid[]) throws Exception{
    Synthesizer synthesizer=MidiSystem.getSynthesizer();
    synthesizer.open();
    MidiChannel kanal=synthesizer.getChannels()[0];
    for(int i=40; i<120; i++){
      kanal.noteOn(i, 60);
      Thread.sleep(200);
      kanal.noteOff(i);
    }
  }
}