Take ballet, remove the classical music, then replace it with songs by INXS and Queen, and you've got Ballet Nouveau Colorado's Rock Ballets. Yes, tutus and plies are still part of the show, but set to guitars and drums they quickly lose their stuffiness. These outdoor performances were wildly popular last year, but BNC has scheduled just one this year--tonight--so don't wait around for a "next time." Sat, June 20. 7:30 p.m. Arvada Center for the Arts and Humanities, 6901 Wadsworth Blvd., 720-898-7200 $10-$28