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.
Josef Waldbauer Josef Waldbauer (Hungarian: "Waldbauer József" ; also "Joseph Waldbauer", "József Waldbauer") (1861–1920) was an Austrian-Hungarian composer, violinist and music educator.