Hello, George!

Thank you very much for your answer!
My name is Kazumi from Japan.
Yes, "Die Opernprobe" has been performed in Tokyo(New National
Theatre Tokyo ) on Dec, 2000.
Now You can see pictures of this performance.

http://www.nntt.jac.go.jp/index3_f.html

But I could not see this opera, because I was not in Japan
at that time.

I want to go to Freiberg to see "Der Pole und sein Kind" very much!
But it's not so easy.

I will find and get the piano score of "Regina".
Thank you !

Kazu