On the air, the war affected almost every show. Variety shows wove patriotism through their comedy and music segments; dramas and soaps had characters join the service and go off to fight. Even before hostilities commenced in Europe, one of the most played songs on radio was Irving Berlin's "God Bless America", popularized by CBS personality Kate Smith.[76] Although an Office of Censorship sprang up within days of Pearl Harbor, censorship would be totally voluntary.