What Austro-Hungarian composer helped produce "Princess Flavia" and "New Moon"?
Sigmund Romberg Sigmund Romberg (July 29, 1887 – November 9, 1951) was an Austro-Hungarian composer who spent most of his adult life in the United States. He is best known for his musicals and operettas, particularly "The Student Prince" (1924), "The Desert Song" (1926) and "The New Moon" (1928).
Duchess Maria Antonia of Bavaria Maria Antonia, Princess of Bavaria (18 July 1724 – 23 April 1780), Electress of Saxony, was a German composer, singer, harpsichordist and patron, known particularly for her operas "Il trionfo della fedeltà" (Dresden, summer 1754) and "Talestri, regina delle amazoni" (Nymphenburg Palace, February 6, 1760). She was also the Regent of Saxony in 1763-1768. Baptised "Maria Antonia Walpurgis Symphorosa", she was known as Maria Antonia.