Old Town School of Folk Music's annual Square Roots Festival features multiple indoor and outdoor stages with a mix of national and local musicians, including kindie fave Laura Doherty. Kids will love the family barn and Brazilian Parade, where they can march using instruments they've made in the art tent. Suggested donations support Old Town School's scholarship programs. July 11-13 on Lincoln Avenue between Montrose and Wilson avenues (squareroots.org). Suggested donations: $20 per family; individuals $10, kids $5.