Sorry for the late reply. Well, I'll think about it. Currently it's a kind of a visual style part — a led-like display. The main controller there are the x and y axes. The keyboard here operates as a helping element, something like a grid in a graph underneath the graph itself. This visually explain, that the keyboard is neither usual keyboard, where you need to tap keys, nor the main element, but more like an X/Y controller. But anyway it's a good thought. I'll think about it. Thanks.