public override void initialize()
        {
            s1 = content.Load <Song>("Sound/Music/WelcomeToTheJungle");

            addRenderer(new RenderLayerExcludeRenderer(0, 999));
            addRenderer(new ScreenSpaceRenderer(10, 999));


            var canvas = createEntity("ui")
                         .addComponent(new UICanvas());

            canvas.setRenderLayer(999);

            var table = canvas.stage.addElement(new Table())
                        .setFillParent(true);

            table.defaults().setPadTop(20);

            var bar = new ProgressBar(0.0f, 1.0f, 0.01f, false, ProgressBarStyle.create(Color.Black, Color.White));

            table.add(bar);

            table.row();

            var slider = new Slider(0.0f, 1.0f, 0.01f, false, SliderStyle.create(Color.DarkGray, Color.LightYellow));

            table.add(slider);

            table.row();

            var button = new Button(ButtonStyle.create(Color.Black, Color.DarkGray, Color.Green));

            button.onClicked += Button_onClicked;

            table.add(button).setMinWidth(100).setMinHeight(30);


            canvas.isFullScreen = true;
        }