Totally agree. And it's less compact, more verbose, "too graphical" I might say. It's fine to show how to play "Der Flohwalzer" or something, but would be horri

Totally agree. And it's less compact, more verbose, "too graphical" I might say. It's fine to show how to play "Der Flohwalzer" or something, but would be horrible for reading complicated pieces or reasoning about several parties at once. Not to say it's nearly impossible to read the music note-by-note as you play, so you are always thinking in patterns which are hard to recognize when written like that. So, no way it could replace traditional notation. It could be used to show how to play something to a newcomer, but it's not novel, then — I've seen visualizations with highlighted piano keys since like as long as I remember myself. And not that practical anyway, since it's not that hard to remember how to read musical notation and start using it right away (especially if there's no alteration symbols in the key signature and no somewhat obscure symbols like fermatas and stuff).