Has this question ever been really covered?
I'm extremely curious what [the list] would classify as "Extropian Music".
My musical collection is quite large -- and the first thing that would come to my mind as Extropian is "Intelligent Techno". Or, techno music that relies heavily on technology and mathematics. Groups including Autechre and Aphex Twin come to mind immediately.
Of course, I don't think you could mention electronic music & memetics without coming across "music concrete", John Cage, and Frank Zappa...
Enough of my tastes, what do all of _you_ think??
Latest CD Purchased: Fear and Loathing in Las Vegas Soundtrack Favorite Tune on it: White Rabbit by Jefferson Airplane