In 1943, during the German Occupation of Denmark, The Royal Theatre in Copenhagen staged the European premiere of George Gershwin's opera Porgy and Bess. The chapter gives an account of how this opera was accepted and played in the context of occupation and how it was received. This performance has been neglected in most Gershwin scholarship, although being the first performance ever in a full opera production. A core question is how this was possible as this is an opera that represents what the Nazis called Cultural Bolshevism, a work by a Jewish-American composer featuring African-American characters. Research into the archives of the Danish government reveals how this was decided upon.