Career
Kristian Zahrtmann immediately supported the daring work, rewarding Bonnén with a stipendium. As can be seen from his solo exhibition in 1942, Bonnén"s later paintings were much more subdued as, no doubt under the influence of the Nazis, he sought to contribute to "national culture". Indeed, during the Second World War, he worked as a journalist for the Nazi newspaper Fædrelandet.
Bunnén had extensive interests in culture.
He developed a new technique called Dansk Fresko (Danish fresco) based on the use of casein paint on cement. He also sang as a tenor in 1915, translated Heinrich Heine in his 1919 Lyrisk Intermezzo and wrote poems for children.
In 1918, he opened a painting school.