1. Rocklahoma Lineup: Rob Zombie, Creed Performing

    April 04, 2012 12:35 PM EDT Megadeth and Slash Will Also Headline the Three-Day Fest Rob Zombie , Chickenfoot , Creed , Megadeth and Slash are among the headliners announced for this year's Rocklahoma festival, happening May 25-27 in Pryor, Okla. Tickets for the three-day fest go on sale April 13, for $60-$70 a day…