Perry's parade: Of the more than 120 acts unveiled today for Lollapalooza, Aug. 4-6 in Chicago, a precious few are of interest to electronic dance music fans: Thievery Corporation, Lady Sovereign, Gnarls Barkley, and, if you're a closet hip-hop head like me, Kanye West. "We want the fans to discover and explore," organizer and sometime DJ Perry Farrell states. "That's what Lollapalooza is all about: Sounds of all genres swirling about as you walk through the expanse of Grant Park."