Hansen also performed the roles of Don José in Bizet's Carmen and the hunter Konrad in the romantic opera Hans Heiling by Heinrich Marschner. As a baritone he took on the title character in Verdi's Rigoletto.
In 1925, with his film career behind him, Hansen took on the role as Director of the State Theatre of Thuringia, based in Gera. He held the role until 1930, rarely appearing on stage after this period.
He was successful too as a movie actor, and his movie "Die Herrin der Welt" (1919) was one of the most popular movies of that year at the same time.
During his career he mastered 150 roles using both singer ranges, but tended to prefer operettas.
He studied in Copenhagen at the Royal Chamber under the tutelage of baritone Albert Hoeberg (1879-1949) and the tenor Hermann Spiro.