Jānis Liepiņš was a conductor for which opretta composed by Johann Strauss II?
Die Fledermaus Die Fledermaus (] , "The Bat", sometimes called "The Revenge of the Bat") is an operetta composed by Johann Strauss II to a German libretto by and Richard Genée.
Ernst Theis Ernst Theis (born July 31, 1961) is an Austrian conductor. From 2003 to 2013 he was chief conductor of the Staatsoper Dresden.