Opened in October 1911. Ran 104 performances, to about December 1911. The Enchantress is an operetta in two acts with music by Victor Herbert, lyrics by Harry B. Smith and a book by Fred de Gresac. To prevent spoiled Prince Ivan from ascending to his rightful throne, Zergovia's regent and war minister scheme to have him "enchanted" by an alluring opera singer, Vivien Savary, as marriage to a commoner would require him to abdicate. The head of the secret service helps to thwart the plan, as does Vivien, who falls for the prince; meanwhile, several princesses and an American heiress also vie for the prince's hand. Wiki link