Valdštejn is a Czech-language opera in six scenes by Jaromir Weinberger to a libretto by Miloš Kareš after Friedrich Schiller's Wallensteins Lager.
The libretto was translated back into German by Max Brod for 1937 performance in Vienna.
[1] The opera was performed in Vienna at the new Modernes Theater on the Schwarzenbergplatz, a year before the Anschluss and the composer's escape to America.
[2]