Oscar Hammerstein was perhaps the most influential lyricist of the American theater. Together with collaborator Richard Rodgers, he helped define the modern musical, winning eight Tonys and two Academy Awards in the process. Oscar Hammerstein wrote the lyrics to some of the most enduring songs and shows in history — from Showboat to Oklahoma! to South Pacific and The Sound of Music. Fifty years after his death, Rodgers and Hammerstein musicals continue to pack houses on Broadway and throughout the world. But he was not the only Hammerstein to influence musical theater. Oscar Hammerstein’s grandson joins Diane to talk about how his family changed Broadway.