Red Rocks Amphitheatre kicks off its summer concert season on May 8, 2012, with a blast from the past. STYX, REO Speedwagon andTed Nugent take the stage at the famed outdoor arena in Morrison, Colo. The natural acoustics of Red Rocks make for an enjoyable evening of listening to music under the stars -- as long as the weather is good, of course. Other musical acts visiting Red Rocks this summer include the Fray, LMFAO, Foster the People, the Beach Boys and B.B. King.