His compositional output was mainly dedicated to sacred choral works, including several motets and carols, 2 oratorios, a Requiem Mass, and a Stabat Mater.
[1] In c. 1887 Pelletier entered the Royal Military College Saint-Jean and after graduating served as a captain in the Les Fusiliers Mont-Royal.
In 1922 he founded the Saint-Saëns Choral Society, notably conducting performance that year of Samson et Dalila with Cédia Brault and Émile Gour.
[1] In addition to his work as a writer and musician, Pelletier served the city of Montreal as the secretary of the department of health from 1914-21.
His book Initiation à l'orchestre in Montreal was published posthumously in 1948, but his memoirs, Montréal, fin de siècle, which were intended for publication upon his death, have never been printed.