Sergei Rachmaninoff's Polka de W.R. is a virtuoso piano arrangement of Franz Behr's Lachtäubchen (Scherzpolka).
The tune was a favorite of Rachmaninoff's father, Vassily (the "W.R." in the title refers to his father's initials in the German transliteration, Wassily Rachmaninoff), but it is not known whether Rachmaninoff knew its true author to be Franz Behr, or whether he believed that the melody was concocted by his father. Behr was given no mention in the published edition of Polka de W.R., and it was universally believed to be an original work of Rachmaninoff's until the late 20th century, when the true author of the melody was identified.
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