private void music_options_Click(object sender, RoutedEventArgs e)
 {
     if (MusicOption.Instance == null)
     {
         var musicOption = new MusicOption();
         musicOption.Show();
     }
     else
     {
         MusicOption.Instance.Activate();
     }
 }
 private void Window_Closed(object sender, EventArgs e)
 {
     Instance = null;
 }
 private void music_options_Click(object sender, RoutedEventArgs e)
 {
     if (MusicOption.Instance == null)
     {
         var musicOption = new MusicOption();
         musicOption.Show();
     }
     else
     {
         MusicOption.Instance.Activate();
     }
 }
 private void Window_Closed(object sender, EventArgs e)
 {
     Instance = null;
 }