In 2007 LeBlanc was a finalist in the 4th Seoul International Competition for Composers. In 2008 he received the Lutoslawski Award. In 2009 he was awarded the Jules Léger Prize for New Chamber Music for the work L’Espace intérieur du monde.[1][2][3]
LeBlanc is the author of Luigi Nono et les chemins de l'écoute (L'Harmattan, 2010), and of "Xenakis' Æsthetic Project: the Paradoxes of a Formalist Intuition" (Xenakis Matters, Pendragon Press, 2012), and has contributed two chapters to La création musicale au Québec (PUM, 2014). He is member of the Circuit – musiques contemporaines editorial board, responsible of the cahiers d’analyse section, and regular member of the Observatoire interdisciplinaire de création et de recherche en musique (OICRM).
He taught composition at Conservatoire de musique de Montréal from 2016 to 2021, and is currently professor of composition at Université de Montréal.