Leonard Bernstein’s introduction to Heinrich Gebhard’s The Art of Pedaling (1963):
Reading this beautiful book has been in the nature of a recaptured experience for me—the tenderly nostalgic re-experiencing of an old set of emotions. So clearly does the essence of the Gebhard personality emerge in his writing that it transported me almost physically back into his gracious studio in Brookline, Massachusetts, absorbing again the gentle urging, the massive charm, the malice-free wit, and the overwhelming love for music (romantic as a young lover is romantic) that stamped each piano lesson I had with him as a major event. We would sit at two fine old Mason and Hamlins, abreast: I would play, he would play: he would leap up, with that light, deer-like energy, and over my shoulder coax my Mason and Hamlin to sigh and sing like his. Anything I did that pleased him was magnified into a miracle by his enthusiasms: my failures were minimized and lovingly corrected. And all was bathed in the glow of wonder, of constant astonishment at the golden streams of Chopin, the subtle might of Beethoven, the fevered imaginings of Schumann, and the cooler images of Debussy. But nothing ever became really cool. Sound, in itself, was passion; the disposition of sound into constellations for the piano was life itself. I never once left that studio on my own two feet: I floated out.
During my last year of study with this Delphic fountain, I came upon, and was infatuated with, the Variations by Aaron Copland. A new world of music had opened to me in this work—extreme, prophetic, clangorous, fiercely dissonant, intoxicating. The work was unknown to Heinrich. “Teach it to me,” he said, “and then, by Jove, I’ll teach it back to you.” And that is precisely what happened. Obviously Gebhard’s greatness as a teacher resided mainly in his greatness as a student. Not long before his death he wrote me that he was in the midst of “reviewing” the works of Bach and The Ring of the Nibelungen. By Jove, that was a great man.