Chedid created ‑M- as means of overcoming his shyness on stage and also as a way of distancing his work from that of his father and grandmother. The pseudonym comes from Chedid's first initial but also refers to the similar sounding French word aime, meaning love. The character ‑M- is a superhero, noted for having a playful nature, and recognized for his flamboyant costumes (primarily monochrome suits with slim trousers and long jackets with upward pointed collars) and hair styled into the shape of an M. -M- gained international exposure through his recording of the song "Belleville Rendez-vous" for the soundtrack of the 2003 Sylvain Chomet animated film The Triplets of Belleville in both French and English. The song, with lyrics by Chomet and music by Benoit Charest, was nominated for a 2003 Academy Award. The music video for "Belleville Rendez-vous" uses both a live-action depiction of ‑M- and an animated depiction incorporated into footage from the film.