Rhapsody in Blue is a 1924 musical composition for solo piano and jazz band by George Gershwin. Commissioned by bandleader Paul Whiteman, the work combines elements of classical music with jazz-influenced effects and premiered in a concert titled "An Experiment in Modern Music" on February 12, 1924, in Aeolian Hall, New York City. Whiteman's band performed the rhapsody with Gershwin playing the piano. Whiteman's arranger Ferde Grofé orchestrated the rhapsody several times, including the 1924 original scoring, the 1926 pit orchestra scoring, and the 1942 symphonic scoring. 

An American in Paris is a jazz-influenced symphonic poem (or tone poem)[1] for orchestra by American composer George Gershwin first performed in 1928. It was inspired by the time that Gershwin had spent in Paris and evokes the sights and energy of the French capital during the Années folles.

Gershwin scored the piece for the standard instruments of the symphony orchestra plus celesta, saxophones, and automobile horns. He brought back four Parisian taxi horns for the New York premiere of the composition, which took place on December 13, 1928, in Carnegie Hall, with Walter Damrosch conducting the New York Philharmonic.