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:
Groucho Marx up his hands and replying, "Don't shoot me! I'm only the piano player!" was so amusing that Elton John reused it as the title of a 1973 album. An added Marx homage was that a poster for the Marx Brothers' movie "Go West" was included on the cover art. Two albums by British rock band Queen, "A Night at the Opera" (1975) and "A Day at the Races" (1976), are named after Marx Brothers films. In March 1977, Groucho invited Queen to visit him in his Los Angeles home; there they performed "'39" a cappella. A long-running ad campaign for