Step 1 : Introduction to the question "The play Mamma Mia! is based on the songs from which musical group?"
Mamma Mia! is a jukebox musical written by Britishplaywright Catherine Johnson, based on the songs of ABBA composed by Benny Andersson and Björn Ulvaeus, former members of the band. The title of the musical is taken from the group's 1975 chart-topper "Mamma Mia". Björn Ulvaeus and Benny Andersson, who composed the original music for ABBA, were involved in the development of the show from the beginning. Over 60 million people have seen the show, which has grossed $2 billion worldwide since its 1999 debut. A film adaptation was released in July 2008.
