Zappa is one of the Big artists suggested by Garageband to define "Experimental Rock", with Mogwai (!). Really, can't see anything in common. But seems to me I'm more zappian than similar to Satriani, suggested by Instrumental Rock (another hypotesis I pondered on, but left after this evidence).
OK, cross my fingers and let's see what's happening! Wooooohoooo!