ABBA were a Swedish pop group, formed in Stockholm in 1972 by Agnetha F├ñltskog, Bj├Ârn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad: the group name derives from the first letter in each of their 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.
ABBA are estimated to have sold 340 to over 500 million records,making them one of the best-selling music artists of all time.They are also the best-selling band from continental Europe and from outside the English-speaking world. ABBA were the first group from a non-English-speaking country to achieve consistent success in the charts of English-speaking countries, including the United Kingdom, Ireland, Canada, Australia, New Zealand, South Africa, and the United States.They have a joint record eight consecutive number-one albums in the UK. The group also enjoyed significant success in Latin America, and recorded a collection of their hit songs in Spanish.