Which American band formed in 1990 perform,ed at the Portland Exhibition Building?
Portland Exposition Building: The Portland Exposition Building, also known as The Expo, is a sports and exhibition venue (convention center) building complex in Portland, Maine. Portland Exposition Building:  Phish, Ani Difranco, Natalie Merchant, The Monkees, and Rusted Root have played at the venue.
i don't know