Aurea's RI250 program on Roger Williams and the founding of Rhode Island: writings of Roger Williams and his Narragansett-language translations, indigenous poetry, old English and American hymns and music of Purcell, Handel, Byrd, Ives and Barbara Kolb, with readings by Nigel Gore and Chris Turner and Turner's harmonica improvisations. With Omar Guey and Sarah Whitney (violins), Consuelo Sherba (viola), Emmanuel Feldman (cello). Free; all ages; limited seating.