One of the great things about being stationed in Washington, DC was the concerts provided by the US Army Band, The Marine Corps Band, and The Air Force Band. And, each had various subgroups like jazz bands/combos, choruses and individual soloists.
To me, the most enjoyable was the show the Army put on at the Jefferson Memorial. The audience sat on the steps [no few bringing folding chairs] and the Band would march in followed by The Old Guard, along with Washington's Lifeguard and The Fife and Drum corps. What an awesome show!