"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
Text to this post, obtained from this song's Wikipedia page, has been slightly modified and made available here under the Creative Commons Attribution-ShareAlike 3.0 Unported License. (CC BY-SA 3.0)
https://creativecommons.org/licenses/by-sa/3.0/