private MusicViewModel()
        {
            AddLink  = new Command.AddMusicLinkCommand(AddMusic);
            AddFile  = new Command.AddMusicFileCommand(AddMusic);
            DropFile = new Command.DropMusicFileCommand(AddMusic);
            Delete   = new Command.DeleteMusicCommand(RemoveMusic);

            LoadData();
        }
        private MusicViewModel()
        {
            AddLink = new Command.AddMusicLinkCommand(AddMusic);
            AddFile = new Command.AddMusicFileCommand(AddMusic);
            DropFile = new Command.DropMusicFileCommand(AddMusic);
            Delete = new Command.DeleteMusicCommand(RemoveMusic);

            LoadData();
        }