The Swedish musical group ABBA is one of the most successful and iconic pop groups in history. Formed in Stockholm in 1972, the group consisted of Benny Andersson, Björn Ulvaeus, Anni-Frid Lyngstad, and Agnetha Fältskog. Their unique sound combined elements of pop, disco, and folk music, and their songs have become some of the most beloved and recognizable in the world. ABBA has sold over 400 million records worldwide, making them one of the best-selling music artists of all time.