Evenings at Salt Pond, hosted by the Cape Cod National Seashore, continue with “Nature and Music: A Beautiful Marriage,” a free multimedia presentation by Cape Symphony conductor Jung-Ho Pak and executive director Michael Albaugh, on Tuesday, Aug. 31, 7 p.m. Expect excerpts from Vivaldi’s The Four Seasons, Beethoven’s Pastoral Symphony, and Debussy’s La Mer. The event will take place at the outdoor amphitheater, 50 Nauset Road in Eastham.