He's getting older, as we all are. He used to be all over the place, never sitting down, but jumping and bouncing. I saw him on Marienplatz at least ten years ago.
I have rarely seen that kind of energy. It does not matter, if its hard or complicated music. It does not matter if its considered quality. This energy is captivating. I have only one musician who I have seen a comparable energy with on his instrument. That is Евге́ний Ки́син. The musical style could not be more different, and still, the energy is the same.