The group Dancing Queen is most famously known as the Swedish pop group ABBA, which was formed in 1972 and consisted of members Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. They are best known for their hit songs such as 'Mamma Mia', 'Dancing Queen', and 'Take a Chance on Me'. ABBA has sold over 380 million records worldwide, making them one of the best-selling music artists of all time.