Quote from Jerry in The Jacket
Jerry: You don't know Robert Schumann? The composer? George: Oh, Schumann. Of course. Jerry: He went crazy from one note. He couldn't get it out of his head. I think it was an A. He kept repeating it over and over again. He had to be institutionalized. George: Really? Well, what if it doesn't stop? Oh, that I really needed to hear. That helps a lot! All right, just say something. Just start talking. Change the subject.