The American conductor was rolled out yesterday as music director of the Brno Philharmonic, in a city famed for its Mies Van der Rohe glass room.
Bored by the flat Czech formalities, Dennis sat himself down at the piano and started playing music by Pavel Haas, a Jewish composer who was ripped out of Brno and put on a train to Terezin and Auschwitz, where he was murdered.
Haas is not remembered much back home. He is now.
Fast-forward to 11:45 on the video to see Dennis teach a lesson in lost history. It won’t be the last.