Heinrich Marschner (1795-1861) is recognized as the most important composer of German Romantic Opera in the period between Carl Maria von Weber (1786-1826) and Richard Wagner (1813-1883). Many people may know of his dark, supernatural operas, Der Vampyr (1828), Der Templer und die Jüdin (1829), and Hans Heiling (1833), which were extremely popular in his...