Die Kluge. Die Geschichte von dem König und der klugen Frau is an opera in 12 scenes written by Carl Orff. It premiered at the Frankfurt Opera, Germany, on 20 February 1943. Orff referred to this opera as a Märchenoper. The composer also wrote the libretto, based on "Die Kluge Bauerntochter" from Grimms' Fairy Tales. A performance lasts for about 90 minutes and is often paired with Orff's Der Mond.