Actor, lute-singer, opera-singer, musicologist, composer, born in Schwerin (Mecklenburg), died in Badenweiler (Südbaden); since 1907 at the theaters in Berlin, first public concert as lute-singer 1913, opera-singer since 1920, 1932 professor of physiology and anatomy of the vocal organs; researcher of the folk-song. (Rainer Stelle)