Nathan Milstein
Dubach began studying violin under Elisabeth Schöni at the age of 7. Within two years, he won the Concours National of the 1964 EXPO in Lausanne, followed by appearance on television and radio around Switzerland. He proceeded to study under Eva Zurbrügg, Ulrich Lehmann, Yehudi Menuhin, Nathan Milstein, Magda Lavanchy and Salvatore Accardo.