Göran Bror Benny Andersson, born December 16 1946 is a Swedish musician, composer and member of ABBA. He is the co-composer of the musicals Chess, Kristina från Duvemåla and Mamma Mia!. He was executive producer of both Mamma Mia! films; Mamma Mia! and Mamma Mia! Here We Go Again. Since 2001 he has been active working with his own band Benny Anderssons Orkester.