 In 1904, Schorr replaced his distant relative Hazzan Boruch Schorr as the official cantor for the rebbe of Rymanów.During World War I, Schorr served in the Imperial army of the Austro-Hungarian Empire.After the war, he took various cantorial posts in central and eastern Europe, including Brno in Czechoslovakia, Kraków in Poland and a brief stint in Zürich, Switzerland.