Marx Brothers made a guest appearance to introduce the "Tonight Show's" new host, Johnny Carson. Around 1960, the acclaimed director Billy Wilder considered writing and directing a new Marx Brothers film. Tentatively titled "A Day at the U.N.", it was to be a comedy of international intrigue set around the United Nations building in New York. Wilder had discussions with Groucho and Gummo, but the project was put on hold because of Harpo's ill-health and abandoned when Chico died in 1961. He was 74. Three years later, on September 28, 1964, Harpo died at the age of 75 of a heart attack
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