Édouard Deldevez

[2] He was principal conductor of the Orchestre de la Société des Concerts du Conservatoire from 1872 to 1885.

"[5] The standard French edition of his musicological works reedited in 1998 and 2005 by Jean-Philippe Navarre gives only "Édouard-Marie-Ernest Deldevez.

"[6] Deldevez became part of a group of musicians around François Sudre (1787–1864) who were attempting to develop a way of transmitting language through music.

Clearly grasping at straws, Sudre then offered the military a set of musical canons, but they declined the suggestion.

His compositions include the operas Lionel Foscari (1841), Le Violon enchanté (1848), L'Éventail (1854), and La Ronde des sorcières, along with several lyric scenes and ballets.