2:30pm, Cape Henlopen High School Theater, 1250 Kings Highway, Lewes.  It seems that people like to categorize. Placing hard edges between this and that; here and there; us and them; is regrettably second nature. Just ask Linnaeus. But sometimes (or maybe most times), the edges are not as clear as we pretend they are. Case in point: Classics IV. Symphonic language but cinematic form.Tickets: www.delawaresymphony.org.