Ballet in one act with choreography by van Manen, music by Cage, and designs by Vroom. Premiered 20 Jun. 1972 by the Dutch National Ballet at Stadsschouwburg in Amsterdam with Radius and Ebbelaar. The ballet is set to Cage's Perilous Night and portrays a man and a woman engaged in an aggressively confrontational relationship. It was revived for the Royal Ballet in 1973.