Ring Ring...ABBA.

'Björn & Benny, Agnetha & Anni-Frid' is what ABBA called themselves from 1972 to 1973, before the 'ABBA' name was invented. During this time the future members of ABBA were still unsure whether the collaboration would be their main musical act or whether it would be worth pursuing as a quartet in general - or if each member would continue their successful solo careers in Sweden - or in the case of Björn and Benny, a duo.

      8. Me And Bobby and Bobby's Brother.