Scintillating rhythm of "Manhattan Towers" drifts across the empty stage. Suddenly there is a burst of loud, bouncy music, and the stage is alive with bustling people in red and green costumes. A street sweeper, in a dazzling white uniform, saunters jovially across the stage, and a policeman waves and whistles frantically at a noonday shoppers. The scene is typical of a busy thoroughfare in New York.