Mamma Mia! is a jukebox musical written by British playwright Catherine Johnson based on songs recorded by Swedish group ABBA and composed by members Benny Andersson and Björn Ulvaeus. The musical's title is taken from the group's 1975 chart-topper "Mamma Mia". Ulvaeus and Andersson were involved in the development of the show from the beginning, while singer Anni-Frid Lyngstad was involved financially in the production and also appeared at many of the premieres around the world.

Göran Bror Benny Andersson is a Swedish musician, composer and producer best known as a member of the pop group ABBA and co-composer of the musicals Chess, Kristina från Duvemåla, and Mamma Mia! For the 2008 film version of Mamma Mia! and its 2018 sequel, Mamma Mia! Here We Go Again, he worked also as an executive producer. Since 2001, he has been active with his own band Benny Anderssons orkester.