The Song of the Albigensian Crusade (Original title, in Old Occitan: "Canso de la crozada", modern Occitan: "Cançon de la Crosada", known in French as: "Chanson de la croisade albigeoise", ') is an Old Occitan epic poem narrating events of the Albigensian Crusade from March 1208 to June 1219. Modelled on the Old French "chanson de geste", it was composed in two distinct parts: William of Tudela wrote the first towards 1213, and an anonymous continuator finished the account. However, recent studies have proposed the troubadour Gui de Cavalhon as the author of the second part. It is one of three major contemporary narratives of the Albigensian Crusade, the "Historia Albigensis" of Pierre des Vaux-de-Cernay and the "Chronica" of William of Puylaurens being the others.