Many cities, in addition to well-funded professional orchestras, boast ensembles that consist of musicians playing at a professional level, but who, for one reason or another, decided to pursue professions outside of music. These ensembles vary greatly in terms of quality (as do “professional” orchestras). One that deserves wider recognition, that produces concerts of a consistently high standard, is Sinfonia de Montréal, which celebrates its 25th Anniversary next year. Louis Lavigueur, artistic director since its inception, is one of Québec’s most respected and admired musicians. He demonstrated exactly what can be achieved with modest means, thanks to imaginative programming and…