sentences:  At the 1872 Congress of the Breton Association at Saint-Brieuc, Luzel read a text that he had prepared, in which he raised suspicions about the authenticity of the songs included in the "Barzaz Breiz", which was published by Théodore Hersart de la Villemarqué 33 years earlier.A public controversy ensued and his speech, which was rejected by the Breton Association, was heavily edited.The controversy surrounding Barzaz Breiz would last for more than a century.