ABBA ( ) are a Swedish pop group formed in Stockholm in 1972 by Agnetha Fältskog , Björn Ulvaeus , Benny Andersson and Anni-Frid Lyngstad . The group 's name is an acronym of the first letters of their first names . They became one of the most commercially successful acts in the history of popular music , topping the charts worldwide from 1974 to 1982 . ABBA won the Eurovision Song Contest 1974 at The Dome in Brighton , UK , giving Sweden its first triumph in the contest . They are the most successful group to have taken part in the competition
Eurovision Song Contest 1974
Eurovision Song Contest 1974
ABBA