Performed by the Singing Sergeants of the U.S. Air Force at National Harbor, Fort Washington, Maryland on Sept. 14, 2014. This group and the Concer Band of the U.S. Air Force provided a free concert in celebration of the 200th birthday of the Star Spangled Banner.The Singing Sergeants is the official chorus of the United States Air Force.
http://www.usafband.af.mil/ensembles/BandEnsembleBio.asp?EnsembleID=63