- Mary Cyr
(b Tournon, Sept 10, 1724; d Paris, 1778). French writer. He was the author of a treatise on singing entitled L'art ou les principes philosophiques du chant (Paris, 1756). He was not a musician; he referred to himself as ‘un homme de lettres amateur’. His work is largely concerned with physical aspects of singing, such as sound production and breathing, based upon the earlier work of a physician and anatomist, Antoine Ferrein (...