Summer Breezes Free Concert. Concord Museum. Cambridge Turnpike. Concord. 6:00 p.m. to 8:00 p.m. Pack your blanket and a picnic dinner and enjoy an evening of music from the 6-piece Swing Legacy band. Free admission to the museum from 5:00 p.m. to 8:00 p.m. so enjoy some family-friendly hands-on activities, too. Free. www.concordmuseum.org