Just about anything to cover several styles of music:
Scottish, Western/Cowboy, Blues, Irish, Canadian Folk, and
"Country-Blues Fusion," Appalachian/Bluegrass, Sea Shanty/Rowing Songs.

The Songs:
Loch Lomond,
Red-Headed Stranger,
Make Me A Pallet On Your Floor
My Creole Belle,
Whisky In The Jar,
Wreck Of The Edmund Fitzgerald
Country Roads,
Okie From Muskogee,
Four Strong Winds,
Night Paddy Murphy Died,
something by John R. Cash. Ring Of Fire probably.
Roll In My Sweet Baby's Arms,
Banks Of The Ohio,
Wayfarin' Stranger,
Loch Tay Boat Song,
Shenandoah.

Many songs come to mind.