"Knowing Me, Knowing You" is a hit single recorded by Swedish pop group ABBA. The song was written by Stig Anderson, Benny Andersson and Björn Ulvaeus, with the lead vocal sung by Anni-Frid Lyngstad. During recording sessions it had the working titles of "Ring It In" & "Number One, Number One". "Knowing Me, Knowing You" features on the group's album Arrival, as well as the ABBA Gold: Greatest Hits compilation. The song has remained popular in the years since it was released, and became the catchphrase of Alan Partridge, Steve Coogan's comic creation from the show of the same name. "Knowing Me, Knowing You" is also featured in the Mamma Mia! musical.