The Library of Congress Gershwin Prize for Popular Song is an award given to a composer or performer for his or her lifetime contributions to popular music. Created in 2007 by the United States Library of Congress, the prize is named after brothers George and Ira Gershwin, whose contributions to popular music included songs such as "I Got Rhythm," "Embraceable You," and "Someone to Watch Over Me," the orchestral pieces Rhapsody in Blue and An American in Paris, and the opera Porgy and Bess.