My German isn't brilliant, but I think that this open letter from Krystian Zimerman explains why he and Gidon Kremer did not appear together as originally planned at this year's Salzburg Festival.
For those of us who rely on the universal language that is music, here is KZ playing two of Gershwin's Preludes in Japan. I'm told that he also made a substantial speech to the audience - in Japanese - about American politics and the war in Iraq, but that has not as yet made it on to Youtube.
Enjoy.