His book, Analysis of Tonal Music (co-written with Allen Cadwallader) is a standard text on Schenkerian theory, and is used in universities throughout the United States and Europe. His essays have appeared in Music Forum, Schenker Studies 2, and elsewhere. Prof. Gagné has also taught at Columbia University, Mannes College, and NYU, and he is the former president of the Music Theory Society of New York State (MTSNYS).