It's 30 years since the death of Glenn Gould, but the pianist still provokes strong reactions. So how do today's top players assess his legacy? It still sounds like nothing you've ever heard, however many times you listen to it: Glenn Gould's first recording of Bach's Goldberg Variations, made in 1955, has an energy, an intensity and a sheer joy that is as irresistible today as it was when astonished record-buyers first heard it nearly 60 years ago.
