and African-American culture and music, as well as Jewish culture and music, the actual authors of the first "book musicals" were the Jewish Jerome Kern, Oscar Hammerstein II, George and Ira Gershwin, George S. Kaufman and Morrie Ryskind. From that time until the 1980s a vast majority of successful musical theatre composers, lyricists, and book-writers were Jewish (a notable exception is the Protestant Cole Porter, who acknowledged that the reason he was so successful on Broadway was that he wrote what he called "Jewish music"). Rodgers and Hammerstein, Frank Loesser, Lerner and Loewe, Stephen Sondheim, Leonard Bernstein, Stephen Schwartz, Kander and Ebb and dozens of others during the "Golden Age" of musical theatre were Jewish. Since the Tony Award for Best Original Score was instituted in 1947, approximately 70% of nominated scores and 60% of winning scores were by Jewish composers. Of successful British and French musical writers both in the West End and Broadway, Claude-Michel Schönberg and Lionel Bart are Jewish, among others. One explanation of the affinity of Jewish composers and playwrights to the musical is that "traditional Jewish religious music was most often led by a single singer, a cantor while Christians emphasize choral singing." Many of these writers used the musical to explore issues relating to assimilation, the acceptance of the outsider in society, the racial situation in the United States, the overcoming of obstacles through perseverance, and other topics pertinent to Jewish Americans and Western Jews in general, often using subtle and disguised stories to get this point across. For example, Kern, Rodgers, Hammerstein, the Gershwins, Harold Arlen and Yip Harburg wrote musicals and operas aiming to normalize societal toleration of minorities and urging racial harmony; these works included Show Boat, Porgy and Bess, Finian's Rainbow, South Pacific and The King and I. Towards the end of Golden Age, writers also began to openly and overtly tackle Jewish subjects and issues, such as Fiddler on the Roof and Rags; Bart's Blitz! also tackles relations between Jews and Gentiles. Jason Robert Brown and Alfred Uhry's Parade is a sensitive exploration of both anti-Semitism and historical American racism. The original concept that became West Side Story was set in the Lower East Side during Easter-Passover celebrations; the rival gangs were to be Jewish and Italian Catholic. The ranks of prominent Jewish producers, directors, designers and performers include Boris Aronson, David Belasco, Joel Grey, the Minskoff family, Zero