Swedish pop singer who joined up with wife Agnetha Faltskog in ABBA from 1972 to 1983. He researched business and regulation at Lund College or university. Before performing in ABBA, he performed using the Hootenanny Performers, a popular music group in Scandinavia. He wedded Agnetha Fältskog on July 6, 1971; after their divorce on June 9, 1980, he wedded Lena Kallersjö on January 5, 1981. He offers three daughters, Anna, Emma and Linda, and a boy, Peter. Ulvaeus and Benny Andersson had been close friends aswell as people of ABBA.