ABBA (an acronym of the first letters of the band members' first names) was a Swedish pop group formed in Stockholm in 1972, comprising 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 1975 to 1982. They are also known for winning at Eurovision in 1974, giving Sweden its first victory in the history of the contest and being the most successful group ever to take part in the competition.
ABBA have sold over 380 million albums and singles worldwide, which makes them one of the best-selling music artists of all time, and the second best selling music group of all time. ABBA was the first group to come from a non-English-speaking country that enjoyed consistent success in the charts of English-speaking countries, including the UK, Ireland, the U.S., Canada, Australia, New Zealand, and South Africa. The group also enjoyed significant success in Latin American markets, and recorded a collection of their hit songs in Spanish.