Marx Brothers and Chico appeared less prominently. The two younger brothers, Gummo and Zeppo, never developed their stage characters to the same extent as the elder three. They each left the act to pursue business careers at which they were successful, and for a time ran a large theatrical agency through which they represented their brothers and others. Gummo was not in any of the movies; Zeppo appeared in the first five films in relatively straight (non-comedic) roles. The performing lives of the brothers owed much to their mother Minnie Marx, who acted as their manager until her death in 1929. The
A Night at the Opera (film) Night at the Opera" but "A Day at the Races". Another idea of Thalberg's was that before filming would commence on an upcoming picture, the Marx Brothers would try out its material on the vaudeville stage, working on comic timing and learning what earned a laugh and what did not. He was keen to plant gags accordingly so the laughs could be timed correctly. The famous "stateroom" scene was nearly eliminated because it was not getting any laughs. One evening the Marx Brothers threw away the script and ad-libbed the whole thing. As a result, a weak scene was transformed