What Austro-Hungarian composer helped produce "Princess Flavia" and "New Moon"?
Princess Flavia Princess Flavia is a 1925 operetta in three acts based on Anthony Hope's novel "The Prisoner of Zenda", with book and lyrics by Harry B. Smith and music by Sigmund Romberg.
Jan Václav Voříšek Jan Václav Hugo Voříšek (] ; "Johann Hugo Worzischek", 11 May 1791, Vamberk, Bohemia – 19 November 1825, Vienna, Austria) was a Czech composer, pianist and organist.