A signature event of the 10-day Festival del Sole, Taste of Napa will make more of a scene than ever this year with addition of a Town and Country Cook-Off. Modeled after “Top Chef” and its small-screen brethren, the course-by-course competition pits teams of Napa’s best chefs against their San Francisco and Oakland counterparts to gain favor with a panel of celebrity judges. Visitors can wander the grounds and sample hors d’oeuvres from more than 30 of the region’s vaunted restaurants and food producers, as well as vintages from 40 local wineries, including many that rarely open to the public. San Luis Obispo’s Festival Mosaic started out as a few orchestral and choral concerts more than 40 years ago, but it’s expanded mightily both in size and musical scope. For the most provocative performances, go for the Fringe Series, featuring musicians doing highly experimental things with their classical training.