We entered double-doors at the back, wheeling the equipment along dusty corridors. The Colosseum’s interior was skeletal; inside it was clammy and cavernous. A stage, a concrete floor. Bare steel arched high overhead, with crudely bracketed stage-lights. Large sections of that bizarre American parody of grass, "Astroturf," had been dragged before the stage. The itchy green fur was still lined with yard-marks from some forgotten stadium.