“Franz Liszt invented the whole concept of the pianist as star: a virtuoso who takes centre stage for an entire evening, … [As] a general rule in earlier times, composers either played their own music or it just didn’t get performed. But Liszt would habitually programme music by other composers in his concerts. He pretty much created the idea of the masterclass, too: piano teacher as guru in a set-up that would lure students from all over the world.”