ETHEL, a post-modern quartet known for its imaginative programming, will present, "ETHEL's Documerica," at 7:30 p.m. Saturday, Feb.20, in Dominican University's Lund Auditorium, 7900 W. Division St., River Forest. With multiple-screen video projections and original music by some of today's top composers, ETHEL's Documerica is a multimedia concert experience and meditation on America's relationship with its land, resources and people.