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.
Neue Pizzicato Polka Neue Pizzicato Polka (German for "New Pizzicato-Polka"), Op. 449, is a polka composed by Johann Strauss II. It was written in 1892 for concerts to be given under Eduard Strauss in Hamburg. Strauss later inserted the work as a ballet between the second and third acts of his operetta "Fürstin Ninetta" ("Princess Ninetta").