From Wikipedia :
Although struggling in her home country, Gall regularly recorded in Germany from 1966 to 1972, in particular with the composer and orchestrator Werner Müller. She had a successful German career with songs by Horst Buchholz and Giorgio Moroder: Love, l'amour und liebe (1967), Hippie, hippie (1968), Ich liebe dich, so wie du bist (1969) and Mein Herz kann man nicht kaufen (1970). Some of her other Germanic successes included: Haifischbaby (Bébé requin) , Die schönste Musik, die es gibt (Music to Watch Girls By), Was will ein Boy (1967), A Banda (Zwei Apfelsinen im Haar), Der Computer Nr. 3 (1968), Ein bisschen Goethe, ein bisschen Bonaparte, I like Mozart (1969), Dann schon eher der Piano player (1970), Komm mit mir nach Bahia, Miguel (1972). With all her German success, many Germans believed for a long time that Gall was one of their own.