An Armenian national raised in Russia, Rouben Mamoulian (1897--1987) studied in the influential Stanislavski studio, renowned as the source of the "method" acting technique. Shortly after immigrating to New York in 1926, he created a sensation with an all-black production of Porgy (1927). He then went on to direct the debut Broadway productions of three of the most popular shows in the history of American musical theater: Porgy and Bess (1935), Oklahoma...