They always told me if the song's about a good ole boy going down the road with his dog, a gun or fishing pole and a jug of corn whiskey, it's hillbilly. If he's going down the road in his pickup truck with a beer and his neighbor's wife, it's country. If you back either song with a banjo and a mandolin or fiddle, it's bluegrass, and if you sing with an irish accent, it's folk.