Throughout the summer season, a small collective of farms hosts a weekly gathering billed as “a celebration of food and community.” The Feast & Field Market entices friends and families with farm-grown prepared foods, bar service and live music presented by the BarnArts Center for the Arts — all in an idyllic outdoor setting. In this installment of the recurring pastoral party, Montréal band Rosier, formerly known as Les Poules à Colin, serve up indie and traditional Québécois folk selections. Musical merrymakers are invited to bring instruments for a postconcert campfire jam.