"It Don't Mean a Thing" is a 1931 jazz standard by Duke Ellington, with lyrics by Irving Mills. The upbeat swing rhythm and memorable melody have made it a jazz favorite. The lyrics emphasize the significance of swing in music, iconic with the phrase "It don't mean a thing if it ain't got that swing." Originally recorded by Ellington's orchestra, the tune became a hit, propelling Ellington's career. The song has been covered widely, highlighting its importance in the jazz repertoire. Overall, "It Don't Mean a Thing" encapsulates the significance of rhythm, improvisation, and musicality in jazz.