Oscar Hammerstein II Mathias by his first wife, and James Hammerstein by his second wife, with whom he also had a stepdaughter, Susan Blanchard. Hammerstein was one of the most important "book writers" in Broadway history – he made the story, not the songs or the stars, central to the musical and brought musical theater to full maturity as an art form. According to Stephen Sondheim, "What few people understand is that Oscar's big contribution to the theater was as a theoretician, as a Peter Brook, as an innovator. People don't understand how experimental "Show Boat" and "Oklahoma!" felt at the time they
Oscar Hammerstein II Kern, with whom Hammerstein enjoyed a highly successful collaboration. In 1927, Kern and Hammerstein had their biggest hit, "Show Boat", which is often revived and is still considered one of the masterpieces of the American musical theatre. "Here we come to a completely new genre — the musical play as distinguished from musical comedy. Now ... the play was the thing, and everything else was subservient to that play. Now ... came complete integration of song, humor and production numbers into a single and inextricable artistic entity." Many years later, Hammerstein's wife Dorothy bristled when she heard a remark that