Not the sappy, sentimental love Gould was referring to when he observed that the piano “is not an instrument for which I have any great love as such ... [but] I have played it all my life, and it is the best vehicle I have to express my ideas.” In a clip filmed in 1981 — he was recording Bach’s “Goldberg Variations” for the second time (the first was in 1955) — he looks like an old man: partly because he insisted, his whole life, on sitting on the adjustable-height chair that his father had made for him as a child and so he is hunched over the keyboard (which no doubt contributed to the beauty of his playing); partly because he suffered for decades from a variety of health problems and neuroses; partly because to have the kind of genius he did is perhaps a burden too heavy to bear for the…