Mamma Mia (ABBA song)

"Mamma Mia" is a song by the Swedish pop group ABBA, written by Benny Andersson, Björn Ulvaeus and Stig Anderson, with the lead vocals shared by Agnetha Fältskog and Anni-Frid Lyngstad. It is the opening track on the group's third album, the self-titled ABBA (1975). The song was released in September 1975 as its sixth single. It tells the story of the narrator's on-again, off-again relationship with a lover who is repeatedly unfaithful to her.