static void Main()
 {
     Metronome m = new Metronome();
     Listener l = new Listener();
     l.Subscribe(m);
     m.Start();
 }
 private void HeardIt(Metronome m, EventArgs e)
 {
     System.Console.WriteLine("HEARD IT");
 }
 public void Subscribe(Metronome m)
 {
     m.Tick += new Metronome.TickHandler(HeardIt);
 }