Allegro is a musical by Richard Rodgers (music) and Oscar Hammerstein II (book and lyrics), their third collaboration for the stage, which premiered on Broadway on October 10, 1947. After the immense successes of the first two Rodgers and Hammerstein musicals, Oklahoma! and Carousel, the pair sought a subject for their next play. Hammerstein had long contemplated a serious work that would deal with the problems of an ordinary man in the fast-moving modern world. Rodgers and he sought to create a work that would be as innovative as their first two stage musicals. To that end, they created a play with a large cast, including a Greek chorus. After a disastrous tryout in New Haven, Connecticut, the musical opened on Broadway to a large advance sale of tickets and very mixed reviews. The Broadway run, directed by Agnes de Mille, ended after nine months; it had no West End production and has rarely been revived.