 Complete the following phrase:  Family Four were a Swedish pop group who recorded during the 1960s and 1970s. They were made up of Berndt Öst, Marie Bergman, Agnetha Munther and Pierre Isacsson. They won Melodifestivalen twice, in 1971 with Vita vidder and in 1972 with Härliga sommardag. They went on to represent Sweden in the Eurovision Song Contest on these two occasions. They finished sixth in 