Swedish supergroup ABBA is one of the most successful pop groups in history. Formed in Stockholm in 1972, the group consisted of Agnetha Fältskog, Björn Ulvaeus, Benny Andersson and Anni-Frid Lyngstad. They released eight studio albums and achieved international success with their catchy pop songs, such as 'Dancing Queen' and 'Mamma Mia'. ABBA's music has been featured in numerous films, television shows, and musicals, and the group has sold over 400 million records worldwide.