Rosalie is a musical with music by George Gershwin and Sigmund Romberg, lyrics by Ira Gershwin and P.G. Wodehouse, and book by William Anthony McGuire and Guy Bolton. The story tells of a princess from a faraway land who comes to America and falls in love with a West Point Lieutenant.

George Gershwin was an American composer and pianist whose compositions spanned popular, jazz and classical genres. Among his best-known works are the orchestral compositions Rhapsody in Blue (1924) and An American in Paris (1928), the songs "Swanee" (1919) and "Fascinating Rhythm" (1924), the jazz standards "Embraceable You" (1928) and "I Got Rhythm" (1930), and the opera Porgy and Bess (1935), which included the hit "Summertime".