Off to the Opera (1952)

The two talking magpies Heckle and Jeckle are watching the crowds going into the theater to see a performance of "The Barber of Seville" and decide to get some culture of their own by sneaking into the opera. The stage-door manager tosses them out on their first attempt but they finally get past him and have a typical H&J outing by running across the stage during the performance, changing into costumes, and evading the frantic efforts of the manager.