Chelmsford: At the Chelmsford Agway Winter Farmers Market, you’ll find fresh produce, beef, pork, eggs, fish, breads, pastries, fudge, wine, pasta, cheese, and nuts. Saturdays through Feb. 4, 10 a.m.-2 p.m. Chelmsford Agway Winter Farmers Market, 24 Maple Road. 978-256-9991, www.chelmsfordagwayfarmersmarket.blogspot.com.
Rockport: What Time Is It Mr. Fox? is a group that blends genres and ideas through music. Saturday, 7:30 p.m. Old Sloop Coffeehouse, First Congregational Church. $12, $10 advance, 65 and over $7; under 18 $5; family $24. 978-546-3551, www.oldsloopcoffeehouse.org.
Somerville: The Tango Society of Boston sponsors midweek dance breaks every Wednesday, featuring a lesson in Argentine tango. 16 Bow St. $10-$30. 617-699-6246, www.bostontango.org/events.
Submit items to boston.com/addevents.