I made 2 of my friends who didn’t know Katsaris go to the recital on my behalf.
Standing ovation of the whole hall. Even Zimerman didn’t receive such treatment (I was there both times he came)
And people actually clapped on as he made his way to the autograph session.
This recital sounds legendary, totally wish I can be there, if he is coming to the town near you, should definitely check him out.