Jan Torsten Svensson, known professionally as Harpo, is a Swedish pop singer. He was popular in Sweden and around Europe in the 1970s and is best known for his worldwide hits "Moviestar" and "Horoscop

Björn Kristian Ulvaeus is a Swedish musician, singer, songwriter, and producer best known as a member of the musical group ABBA. He is also the co-composer of the musicals Chess, Kristina från Duvemål