He then continued his training by joining the orchestra of the Opéra-comique and followed lessons of musical composition with Leborne Carafa and thanks to a grant from the General Council of the Côte d'Or.
François-Joseph Fétis said about the premiere of the Grand-duc de Matapa, 16 November 1868 at the Théâtre des Menus-plaisirs: "the music of Mr. Debillemont pleasantly caresses the ear.
He was also responsible for music critic columns in various newspapers such as L'élu du peuple in Dijon or la Revue et gazette des théâtres in Paris.
[4] Jean-Jacques Debillemont also participated in various theater projects such as stage adaptations of works by Jules Verne like Le Tour du monde en 80 jours, play in 5 acts and one prologue (15 tableaux) premiered in Paris at the Théâtre de la Porte-Saint-Martin, 7 November 1874, text by MM.
Adolphe d'Ennery and Jules Verne,[5] or Les Enfants du capitaine Grant in 1879.