Mexican folk dancing is a feast for the senses as dancers twirl in long, brightly colored dresses and stomp their feet to the vibrant rhythms of mariachi. And, thanks to Grupo Folklórico Quetzalen, locals can see this spectacle without even having to leave the county, let alone the country. The Sonoma Valley–based troupe will be giving a free performance on August 28, 6–7 p.m., at the Old Courthouse Square in Santa Rosa. Go to downtownsantarosa.org for more information.