I heard him play the complete Sinfonias (3 part inventions) of Bach and Beethoven's Diabelli Variations a few years ago. He's an extraordinary pianist, not a virtuoso type, more of a Schnabel or Serkin as his repertoire indicates, he focuses on Bach and the German classics. I enjoyed his playing immensely, it wasn't dry and dusty the way many classicists play, but alive, colorful and full of life. If you have the opportunity to hear him live, go!