ABBA is a Swedish Edison Award and Eurovision winning pop/dance group active between 1972 and 1982. The quartet was formed through the friendship of Benny Andersson and Björn Ulvaeus and also consists of Anni-Frid Lyngstad (usually known as Frida) and Agnetha Fältskog.
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, giving Sweden its first triumph in the contest. They are the most successful group to have taken part in the competition.