7.4
Una noche en la ópera
 Titulo original: A Night at the Opera 
  Resumen: 
             Los Hermanos Marx en la alta sociedad. A dos amantes que actúan en la ópera se les impide estar juntos porque no aceptan al hombre como tenor. Utilizando varios trucos típicos de los Hermanos Marx, logran que el tenor principal se ausente, y de esta manera el joven amante tendrá su oportunidad. 
  Fecha de estreno: 1935-11-15 
  Producción:  Metro-Goldwyn-Mayer  
   Presupuesto: $0 
  Ingresos: $0 
  Director:   Sam Wood    
   Estado: Released 
  Duración: 1h 31min 
  Países de producción:  United States of America  
 
 Otis B. Driftwood
 Fiorello
 Tomasso
 Rosa
 Ricardo Barroni
 Gottlieb
 Lassparri
 Henderson
 Mrs. Claypool
 Captain
 The Fortune Teller in 'Trovatore' (uncredited)
 The Mayor of New York (uncredited)
 The Stage Manager (uncredited)
 Otto the Elevator Operator (uncredited)
 First Porter (uncredited)
 Ship Passenger (uncredited)
 Manager's Assistant (uncredited)
 Stagehand (uncredited)
 Committeeman (uncredited)
 Orchestra Member Asking Fiorello Not to Play Piano (uncredited)
 Opera Spectator (uncredited)
 Immigration Inspector (uncredited)
 Committeeman (uncredited)
 Engineer's Assistant (uncredited)
 Ship's Officer (uncredited)
 Ship Passenger (uncredited)
 Dignitary (uncredited)
 Opera Conductor (uncredited)
 Stagehand (uncredited)
 Aviator (uncredited)
 Dungeon Guard (uncredited)
 Mayor (uncredited)
 Fortune Teller (uncredited)
 Aviator (uncredited)