The Story Behind Gershwin's "Rhapsody in Blue."

At age 25, took only three weeks to compose one of the most enduring pieces of American music. Used for the film score to Woody Allen's Manhattan, the episodic and jazzy one-movement piano concerto evokes the hustle and bustle of New York's grand metropolitan aura.

NPR's Jeff Lunden tells the story of Gershwin's most identifiable masterpiece.