Fétis, Francois-Joseph. (1784-1871) Autograph Letter on Behalf of Dupont1 page. On letterhead of the Conservatoire Royal de Musique Cabinet du Directeur. Dated Bruxelles, 4 February, 1861. Addressed to "Monsieur Orsini." In French, a letter requesting him to have the "extreme generosity" to accord a leave of absence to Monsieur Dupont, for which his is required for something "for which he is indispensable." Edges a little rough, margins toned, mounting strip to verso, else fine. As a musicologist, critic, teacher and