Starring seniors Hannah Waldhorn and Colin O’Shea, St. Andrew’s Episcopal School performs “Hello, Dolly!” at Macdonald Hall on the school’s campus at 8804 Postoak Road, Potomac, on Friday, Feb. 24 at 7:30 p.m., Saturday, Feb. 25 at 2 p.m. and 7:30 p.m., and Sunday, Feb. 26 at 3 p.m. With music and lyrics by Jerry Herman, “Hello, Dolly!” is a charming musical based on Thornton Wilder’s “The Matchmaker.” It includes such classic songs as “Put on Your Sunday Clothes,” “It Only Takes a Moment” and “Ribbons Down My Back.” Admission is $5 for students and seniors and $10 for adults. No reservations required. Call 301-983-4730, ext. 358 or visit www.saes.org.