Malcolm McLaren (remember him?) has discovered chip music, a semi-legal genre created by "reverse engineering an electronic interface—whether it's a Game Boy or a computer's sound chip—and subverting its original design."
If you're curious what it sounds like, you can listen to some on this site. I'd describe it as existing somewhere on the continuum between Lou Reed's Metal Machine Music and some kid fucking with a Casio. If that's your thing, dig in.