Since early 2003, Lajoie has portrayed an English-Canadian musician named Thomas Edison in Radio-Canada's French-Canadian sitcom L'Auberge du chien noir. Lajoie began his career as a comedy musician in 2006. His performances include music, skits, and some stand-up comedy. Jon Lajoie has also released 3 studio albums, the first two featuring comedy music. His third album took a folk music direction independent of comedy and was released under the moniker 'Wolfie's Just Fine'.