Why not use some of the tunes played by the band that entertained the spectators watching the slaughter at the Battle of Gettysburg?
These included Mockingbird; Palmyra Schottische; Freischutz Quick Step; The Port Royal Galop; Nightingale Waltz; Hail To The Chief; Hail Columbia.
Other popular tunes included Juanita; Lulu's Gone; Tramp, Tramp; Carry Me Back to Old Virginny; We are Coming, Father Abraham; Tenting Tonight on The Old Camp Ground; Goober Peas; When Johnny Comes Marching Home; The Yellow Rose of Texas; Bonny Blue Flag; Stephen Foster songs; Easter Galop; Cheer, Boys, Cheer; Maryland, My Maryland; Old Hundredth; Luto Quickstep; Storm galop; Dixie; Come Where My Love Lies Dreaming; Garry Owen; St. Patrick's day in the Morning; etc.