Add Yahoo as a preferred source to see more of our stories on Google. Abba logo. It's been 50 years since Abba won the 1974 Eurovision song contest with Waterloo and were catapulted to international ...

Agnetha. Björn. Benny. Anni-Frid. All four are superstars in their own right, but when they came together in 1972 to form Swedish supergroup ABBA, they changed the world of music forever. The group — ...

Agnetha Fältskog is a member of the 1972-formed Swedish pop group ABBA, which also consisted of Björn Ulvaeus, Benny Andersson and Anni-Frid Lyngstad Gabrielle Rockson is a Writer-Reporter for PEOPLE.