Maybe we should remind everyone that Lincoln simply loved Dixie, and said he had reclaimed it from the South. When meeting with Grant at, I think, Harrison's Landing, Lincoln asked Grant what his favorite song was. Grant replied there were two; one was "Yankee Doodle", and the other one wasn't. Perhaps apocryphal, but it does show Grant was not musically inclined. Here are a couple of sites referring to "Dixie. Stan
http://www.npr.org/programs/morning/features/patc/dixie/index.html
http://home.freeuk.net/gazkhan/patriotic_music.htm