"Mamma Mia" by the Swedish pop group ABBA, is the opening track on their 1975 self-titled album.
The song was written by Benny Andersson, Björn Ulvaeus and Stig Anderson, with the lead vocals shared by Agnetha Fältskog and Anni-Frid Lyngstad.
https://en.wikipedia.org/wiki/Mamma_Mia_(song)
https://en.wikipedia.org/wiki/ABBA_(album)
https://en.wikipedia.org/wiki/ABBA
The song was written by Benny Andersson, Björn Ulvaeus and Stig Anderson, with the lead vocals shared by Agnetha Fältskog and Anni-Frid Lyngstad.
https://en.wikipedia.org/wiki/Mamma_Mia_(song)
https://en.wikipedia.org/wiki/ABBA_(album)
https://en.wikipedia.org/wiki/ABBA