Canteloube composed his first opera, Le mas ("The Farmstead" in Occitan language), to his own libretto from 1910 to 1925 (its composition delayed during war years). The three act work won the Prix Heugel in 1925, and was awarded the prize of 100,000 Francs. However, the reaction to this composition by the Leaders of the Opéra-Comique in Paris was far less enthusiastic than the jury. After pressure from the publisher, it finally premiered on 3 April 1929, but it was never revived. Vercingétorix, his second opera, in four acts, was inspired by a libretto by Étienne Clémentel, mayor of Riom (Puy-de-Dôme) and Hervé Louwyck on the Gauls' defeat by Julius Caesar. The Paris Opéra gave the first performance on 22 June 1933, but it was accused of lacking theatricality.