 After they formally teamed up in burlesque in 1936, he and Costello continued to hone the sketch.It was a big hit in the fall of 1937, when they performed the routine in a touring vaudeville revue called "Hollywood Bandwagon".In February 1938, Abbott and Costello joined the cast of "The Kate Smith Hour" radio program, and the sketch was first performed for a national radio audience on March 24 of that year.