8-9:15, the Rehoboth Beach Bandstand, Rehoboth Avenue and the Boardwalk. The Singing Sergeants is the official chorus of the United States Air Force. Stationed at Joint Base Anacostia-Bolling in Washington, D.C., the group is one of six musical ensembles that comprise The U.S. Air Force Band. Featuring 23 active duty Airmen musicians, the Singing Sergeants presents more than 200 performances annually performing a wide range of musical styles, from traditional Americana, opera, and choral standards to modern Broadway and jazz. http://www.rehobothbandstand.com/events/.