Were any members of ABBA in mamma mia?

Answer 1

Well, honey, ABBA is the whole reason "Mamma Mia" exists! The musical and movie are based on the songs of ABBA, but none of the original members of the band actually appear in the production. So, while you won't see Agnetha, Björn, Benny, or Anni-Frid on stage, their music sure steals the show.

Answer 2

Yes, Benny Andersson and Bjorn Ulvaeus both have brief cameos in the film version of Mamma Mia. Andersson appears as the piano player on the dock during "Dancing Queen". Ulvaeus appears in a toga at the end of the film during "Waterloo". Andersson also plays keyboards on the soundtrack, including for Amanda Seyfried's solo of "Thank You For the Music" over the end credits. Three other original Abba session musicians (guitarist Lesse Wellander, bassist Rutger Gunnarsson, and drummer Per Lindvall) also play on the sountrack. Of course Andersson and Ulveaus are producers and composers for both the film and the stage play.