Unique in its genre, the Ensemble d’Ondes de Montréal has a mandate to promote music composed for the ondes Martenot. Founded in 1976 at the Conservatoire de musique de Montréal by Jean Laurendeau, today the Ensemble carries out its activities most often in the form of a quartet of ondes, with the musicians, Estelle Lemire, Suzanne Binet-Audet, Geneviève Grenier, and Marie Bernard. Louise Larose and Jean Laurendeau joined the Ensemble for la Fête des belles eaux.
Members of the EOM see it as an open ensemble, performing works composed not only for quartet, but also for very diverse groups. The EOM has premiered works by many Canadian composers, notably Raynald Arseneault, Walter Boudreau, Richard G. Boucher, Brian Cherney, Micheline Coulombe Saint- Marcoux, José Evangelista, Michel Gonneville, Jean Lesage, Michel Longtin, Bruce Mather, Serge Provost, and Petros Shoujounian. In addition to these premiers, the group has played works from the repertoire for ondes quartet, such as those by Charpentier, Messiaen, Murail, Wyshnegradsky, and transcriptions of works from the classical repertoire. The EOM has appeared in Montreal, Toronto, New York, Amsterdam, and Minneapolis.