Anything 2nd South Carolina String Band!
I am with Company I, 42nd Mississippi Volunteer Infantry Reg't, My Pards and I can't get enough of 2nd South!
A few of my favorites from this group include:
2 Southern Soldier
3 Richmond is a Hard Road
4 Old Dan Tucker
5 Jine The Cavalry
6 When Johnny Comes Marching Home
7 Ring De Banjo
8 Kingdom Coming
9 Cumberland Gap
10 Goober Peas
and of course, if your friend has seen Gods and Generals this band was the one that performed Bonnie Blue Flag when the Texas troops put on the show during winter camp...Classic!
Hope this helps get him started!