 After an unsuccessful premiere, the opera was extensively revised by Barber and Gian Carlo Menotti in an edition first performed in 1975.For the world premiere—also the opening of the new Metropolitan Opera House—no expense was spared, with the creative team including Zeffirelli himself directing and designing the production.The team included revolutionary choreographer Alvin Ailey, conductor Thomas Schippers and a top rate cast headed by Leontyne Price as Cleopatra.