 Wenzinger received his basic musical training at the Basel Conservatory, then went on to study cello with Paul Grümmer and music theory with Philipp Jarnach at the Hochschule für Musik in Cologne.He then took private cello lessons with Emanuel Feuermann in Berlin.Wenzinger served as first cellist in the Bremen City Orchestra (1929–1934) and the Basel Allgemeine Musikgesellschaft (1936–1970).