Broadway theater flourished in the 1920s with over 50 new musicals opening each year, fueled by a thriving entertainment scene in New York City following World War I. Major Broadway shows of the decade included Showboat in 1927, No, No, Nanette in 1925, and Lady, Be Good in 1924. Notable Broadway composers during this era were George Gershwin, Cole Porter, and Richard Rodgers and Lorenz Hart. The Theatre Guild, founded in 1919, produced over 200 plays and greatly contributed to Broadway's success in the 1920s.