Marx Brothers and the Marx Brothers. Most of the comedians provided their own voices for their animated counterparts, except for Fields and Chico Marx (both had died), and Zeppo Marx (who had left show business in 1933). Voice actor Paul Frees filled in for all three (no voice was needed for Harpo). The Marx Brothers' segment was a reworking of a scene from their Broadway play "I'll Say She Is", a parody of Napoleon that Groucho considered among the brothers' funniest routines. The sketch featured animated representations, if not the voices, of all four brothers. Romeo Muller is credited as having written
Chico Marx a rendition of "The Beer Barrel Polka". Chico became the unofficial manager of the Marx Brothers after their mother, Minnie, died in 1929. As manager, he cut a deal to get the brothers a percentage of a film's gross receipts—the first of its kind in Hollywood. Furthermore, it was Chico's connection with Irving Thalberg of Metro-Goldwyn-Mayer that led to Thalberg's signing the Brothers when they were in a career slump after "Duck Soup" (1933), the last of their films for Paramount. For a while in the 1930s and 1940s, Chico led a big band. Singer Mel Tormé began his professional