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.
Rafael Joseffy Rafael Joseffy (July 3, 1852June 25, 1915) was a Hungarian pianist, teacher and composer.