“Once, along with The Transfigured Night, he played a class Rachmaninoff’s Isle of the Dead. Most of the class had not seen the painting, so he went to the library and returned with a reproduction of it. Then he pointed, with a sober smile, to a painting which hung on the wall of the classroom (A Representation of Several Areas, Some of Them Grey, one might have called it; yet this would have been unjust to it—it was non-representational) and played for the class, on the piano, a composition which he said was an interpretation of the painting: he played very slowly and very calmly, with his elbows, so that it sounded like blocks falling downstairs, but in slow motion. But half his class took this as seriously as they took everything else, and asked him for weeks afterward about prepared pianos, tone-clusters, and the compositions of John Cage and Henry Cowell; one girl finally brought him a lovely silk-screen reproduction of a painting by Jackson Pollock, and was just opening her mouth to—
He interrupted, bewilderingly, by asking the Lord what land He had brought him into. The girl stared at him open-mouthed, and he at once said apologetically that he was only quoting Mahler, who had also diedt from America; then he gave her such a winning smile that she said to her roommate that night, forgivingly: “He really is a nice old guy. You never would know he’s famous.””

“Is he really famous?” her roommate asked. “I never heard of him before I got here. ...”
Source: Pictures from an Institution (1954) [novel], Chapter 4, pp. 138–139