Portland Ballet. The Future of Dance in Maine. Eugenia L. O'Brien, Artistic Director - 517 Forest Avenue, Suite 2, Portland, ME 04101 - Telephone 207.772.9671. Portland Ballet Company, located in Portland, Maine, is an ensemble of professional dancers with a repertoire of over 30 classical and contemporary ballets.Portland School of Ballet offers the best in classical ballet training for dancers age 4 1/2 and up. The faculty is comprised of professionals with extensive backgrounds in ballet performance and education. Classes are available for both recreational and pre-professional dancers.