He also wrote a mandolin instruction method, Méthode pour apprendre à jouer de la mandoline sans Maître (method to learn how to play mandolin without a teacher), published Paris in 1768.
[1][2][3][4][5] He wrote another mandolin method, published in Paris in 1792, and was the author also of Four collections of airs for the mandolin; a New system of practical music, issued in Paris in 1747.
Denis also wrote a French translation of Tartinf's Tratto delle appogiature si asceudenti che discendeiiti per il violino, under the title of Traite des agremens de la musique, compose par le celebre Giuzeppe Tartini a Padua, et traduit par le Sigr.
This volume was published by M. de la Chevardier, Paris.
[5] In his final years, in 1780, he was a music master in a ladies' seminary in Saint Cyr.