The Viennese operetta Jews all spoke Judeo-German. However, since they were religious Sephardim, the established Jews spoke Judeo-Spanish for religious purposes. Immigrant Jews often spoke Judeo-German, a language that is written as it is spoken and which also had no separate name. In Russia, the Jews spoke Spanish, as did the Jews in Apatin, the birthplace of his wife. This Judeo-German is...