ABBA was a Swedish pop group formed in Stockholm in 1972, comprising Agnetha Fältskog, Benny Andersson, Björn Ulvaeus and Anni-Frid Lyngstad. They became one of the most commercially successful acts in the history of pop music, topping the charts worldwide from 1974 to 1982. ABBA has sold over 200 million records worldwide, which makes them one of the best-selling music artists in the history of recorded music. They still sell between two to three million albums a year. ABBA was the first pop 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, South Africa and the Philippines. The group also enjoyed significant success in Latin American markets (particularly Mexico, Chile, Peru, Colombia and Argentina), and recorded a collection of their hit songs in Spanish.
During the band's active years, Fältskog and Ulvaeus were a married couple, as were Lyngstad and Andersson–although both couples later divorced. At the height of their popularity, both relationships were suffering strain which ultimately resulted in the collapse of the Ulvaeus-Fältskog