Home › Venues › ONCE Somerville ONCE Somerville Tickets Buy tickets for concerts at ONCE Somerville in Somerville, MA. No Upcoming Events No upcoming events scheduled at ONCE Somerville. Please contact us with any corrections. Hotels & Lodging Near ONCE Somerville About the Venue ONCE Somerville At-a-Glance Capacity 300Address156 Highland AveSomerville, MA 02143United States Map & Directions Website www.oncesomerville.com/Advertisement