 By 1925 Wenzinger had mastered the viola da gamba, an instrument then usually considered obsolete.He joined the "Kabeler Kammermusik" (Kabel Chamber Music), a circle of musicians interested in authentic Baroque performance, sponsored by paper manufacturer Hans Eberhard Hoesch in Hagen, Germany.In 1930 he and flautist Gustav Scheck also founded the "Kammermusikkreis Scheck-Wenzinger" (Scheck-Wenzinger Chamber Music Circle), considered the leading early music ensemble until the 1950s.