Celebration is the third greatest hits album by American singer-songwriter Madonna, released on September 18, 2009, by Warner Bros. Records. The album features 34 songs spanning Madonna's career from the 1980s to the 2000s, after she signed with the label in 1982. It also includes three new songs: "Celebration" which is included on all versions, "Revolver" which is included on the two-disc editions, and "It's So Cool" which is included as a bonus track on some digital two-disc editions.