"Kleine Frau", Waltz song from the operetta "Die lustige Witwe" ("The Merry Widow") "Kleine Frau", Waltz song from the operetta "Die lustige Witwe" ("The Merry Widow") Libretto Victor Léon Libretto Leo Stein Main opus "Die lustige Witwe" ("The Merry Widow"), Operetta in three acts