ABBA was a Swedish pop group active from 1972 until 1982. The quartet was formed through the friendship of Benny Andersson and Björn Ulvaeus and their respective girlfriends Anni-Frid Lyngstad and Agnetha Fältskog, and together they topped charts worldwide from the mid-1970s to the early 1980s. The name "ABBA" is an acronym formed from the first letters of each group member's given name. ..