 It is best known as the Luxembourgian entry at the Eurovision Song Contest 1963, held in London.Mouskouri had had her international breakthrough with the German language single "Weiße Rosen aus Athen" ("White Roses from Athens") in 1961, a song originally adapted from a Greek folk melody.The song was later translated into several different languages and went on to become one of Mouskouri's signature tunes.