ABBA (stylised ????; Swedish pronunciation: ) were a Swedish pop group formed in Stockholm in 1972 by members Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. 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, and are the most successful group ever to take part in the competition.
ABBA's record sales figure is uncertain and various estimates range from over 140 to over 500 million sold records. This makes them one of the best-selling music artists. ABBA was the first group from a non-English-speaking country to achieve consistent success in the charts of English-speaking countries, including the UK, Ireland, Canada, Australia, New Zealand, South Afr