They represented Switzerland at the Eurovision Song Contest[1] four times, singing 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 1981 with "Io senza te" which they also published in German.
During their career, Peter Sue and Marc made many other attempts to sing at Eurovision.
In 1987 Marc attempted to represent Switzerland with the song "Nostradamus", finishing second behind Carol Rich.
In addition to his participations alongside Sue and Marc, Peter Reber also composed, co-wrote, and conducted the 1980 Swiss entry, "Cinéma" performed by Paola di Medico.
"The Birds of Paradise" was covered by the Russian singer Dmitry Selivanov in 1987 and released in 1990.