Nothing against Mozart and Beethoven, but sometimes a music lover hungers for a change of diet from the familiar classics. In Santa Fe, concertgoers can enjoy a smorgasbord of repertoire when it comes to chamber or choral music, but for aficionados of full-scale symphonic music the city’s concert menus tend toward the tried and true. The most notable exception lurks where one might least expect it, in the Santa Fe Community Orchestra.