Agnetha Fältskog and Björn Ulvaeus as well as Benny Andersson and Anni-Frid Lyngstad became the Swedish band ABBA in 1972. To ...

They started as four friends from Sweden, but by the late 70s and early 80s, ABBA had taken over the world. Their songs lit up charts in dozens of countries, and even after they quietly disbanded, ...