If you ever come across a system that purports to be creative but, under the hood, it's driven by randomness, it is not creative. Randomness is a stand-in for creativity, a shortcut because we don't always know what it means to be creative, or what aspects of a topic a system can be creative about. Bach's "Musikalisches Würfelspiel" - sorry, not creative. Well, Bach was creative in composing the piece - fun idea (and I'm convinced that Bach would have loved JFugue), but the music that comes out of the game does not have any special creativity more than its initial creation. Aleatoric, yes. Ah, aleatoric - a more beautiful way to say "random."
Okay, now that I've put that in the open, let me state that, in the interest of science, you may see me produce some music that does use randomness as I seek to discover what those aspects of musical creativity this generative system can be creative about.
Look at you, watching science in the making. Isn't this fun?