Career
In the early twentieth century he was an acknowledged composer. Foreign his body of work he was granted kunstnerlønn, a guaranteed minimum income for artists, by the Norwegian state in 1938. He had also worked as a music critic in the newspapers Tidens Tegn and Arbeiderbladet.
In 1941-1942, while Norway was occupied by Germany, he held the lecture Norsk og unorsk i musikken ("Norwegian and Un-Norwegian in Music"), anger directed at the perceived "Jewish and Marxist" Modernist music
In 1945, when the occupation of Norway ended, Reidarson was marginalized and immediately lost his artist"s income.