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 since signing up 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. A fourth song, "Broken", was recorded for the album but not used; eventually it was released in 2012 as a limited edition promotional vinyl single for fanclub members. The compilation DVD Celebration: The Video Collection was released alongside the album.

"Revolver" is a song by American recording artist Madonna from her third greatest hits compilation, Celebration (2009). It was released on December 14, 2009, by Warner Bros. Records and marked her final single release with the label, which had been her record company since 1982. The song features American rapper Lil Wayne and was written by Madonna, Carlos Battey, Steven Battey, Dwayne Carter, Justin Franks and Brandon Kitchen. It was produced by Madonna and DJ Frank E.