Brothers Ira and George Gershwin worked almost exclusively together from the early 1920s until George's untimely death in 1937. Their collaborations, including songs such as "I Got Rhythm" and "'S Wonderful," added immeasurably to American popular music. George wrote the music and Ira provided the lyrics for over a dozen musicals, including Funny Face, Show Girl, and Strike Up the Band. Their show Of Thee I Sing {1931} became the first musical to receive a Pulitzer Prize.