A B B A, the iconic Swedish pop supergroup formed in 1972, achieved global fame with hits from 1974 to 1982. Comprised of Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni Frid Lyngstad, they won the Eurovision Song Contest in 1974, marking Sweden's first victory. Their discography includes several successful albums, solidifying their status in music history.