How important has Beethoven been to you as a pianist – is there an affinity more or less than with other composers?
Along with Mozart and Bach, I studied Beethoven all my life. This came from my teacher originally and then his works continued to fascinate me. There was something elemental about its nature because it was about man himself.
When did you first start exploring the HammerklavierSonata?
I first worked on it in my late twenties.
What were the challenges for...