When voices were heard and film comedy became verbal, funny artists like The Marx Brothes, Mae West and W. C. Fields achieved rapid success, while silent slapstick comics like Charles Chaplin and Buster Keaton were adapting their acts to sound. By 1933 The Marx Brothers (with Zeppo) had made four successful films at Paramount, but their zaniness were surpassed by the short, fast and lunatic film, "Duck Soup", a rare opportunity to see Groucho, Chico, Zeppo and Harpo in top form, as they declare war to the status quo and bourgeois respectability, epitomized by the great Margaret Dumont. A marvel of farcical cinema.