Guest and Shearer had both been regular cast members for some time , while McKean was appearing that night as a special guest .
Christopher Guest , Michael McKean and Harry Shearer first appeared as the Folksmen on the November 3 , 1984 , episode of Saturday Night Live .
Guest and Harry Shearer had both been regular cast members for some time , while Michael McKean was appearing that night as a special guest .
Christopher Guest , Michael McKean and Harry Shearer first appeared as the Folksmen on the November 3 , 1984 , episode of Saturday Night Live .