A reunited ABBA (Bjorn Ulvaeus, from left, Anni-Frid Lyngstad, Agnetha Faltskog and Benny Andersson) pose for a photo after the received the Royal Vasa Order from Sweden's king and queen during a ...

In the decades that followed, the Swedish music group, consisting of couples Anni-Frid Lyngstad and Benny Andersson, and Björn Kristian Ulvaeus and Agnetha Fältskog, ...