 Complete the following phrase:  Peter, Sue and Marc were a Swiss music group from Bern. The members were Peter Reber born 1949, vocals  piano  guitar, Sue Schell born 1950 in New York, vocals, and Marc Dietrich born 1948, vocals  guitar. They represented Switzerland at the Eurovision Song Contest four times and in four different languages, French in ESC 1971 with Les illusions de nos vingt ans, English in 1976 with Djambo, Djambo, German in 1979 with Trödler und Co, Italian in 