Polenblut
Polenblut (English: Polish Blood) is a German-language operetta in three scenes by Czech composer Oskar Nedbal with a libretto by Austrian playwright Leo Stein. It is allegedly loosely based on the short story "Mistress into Maid" (also known as "The Squire's Daughter") from The Belkin Tales by Russian author Alexander Pushkin; although Stein himself did not say this. It was one of the most popular operettas in Eastern Europe during World War I, but anti-German sentiment prevented the opera from finding a place on stages elsewhere other than in the United States where it was performed in a heavily modified adaptation under the name The Peasant Girl.