Marx Brothers stage during the middle of a Groucho monologue to see if Groucho would be thrown off. However, to the audience's delight, Groucho merely reacted by commenting, "First time I ever saw a taxi hail a passenger". When Harpo chased the girl back in the other direction, Groucho calmly checked his watch and ad-libbed, "The 9:20's right on time. You can set your watch by the Lehigh Valley." The brothers' vaudeville act had made them stars on Broadway under Chico's management and with Groucho's creative direction—first with the musical revue "I'll Say She Is" (1924–1925) and then with two musical comedies:
Marx Brothers The first Marx Brothers/Thalberg film was "A Night at the Opera" (1935), a satire on the world of opera, where the brothers help two young singers in love by throwing a production of "Il Trovatore" into chaos. The film—including its famous scene where an absurd number of people crowd into a tiny stateroom on a ship—was a great success, and was followed two years later by an even bigger hit, "A Day at the Races" (1937), in which the brothers cause mayhem in a sanitarium and at a horse race. The film features Groucho and Chico's famous "Tootsie Frootsie Ice