iHeart Radio Music Festival in Las VegasSo, this sounds almost too good to be true. Live Nation will be bringing scores of musical acts to Gexa Pavilion this summer, and as a special promotion, are offering tickets for just $20 each — no fees, no extras, just 20 bucks. The offer runs on this Friday, May 13, starting at (are you paying attention?) 2 a.m., and ends by 10 p.m. that night. Among the acts to choose from: Journey and the Doobie Brothers (May 20), Darius Rucker (June 17), The Art of Rap featuring Public Enemy, MC Lyte and Ice-T (July 16), Rascal Flatts (July 30), Gwen Stefani with Eve (Aug. 13), Heart, Joan Jett (pictured) and Cheap Trick (Aug. 18), and 5 Seconds of Summer (Sept. 17). Just go here to purchase.