It makes me think of the most ancient United States folk music, the stuff from way up in the mountains. Appalachia is home to the most wailing, honest, raw, and real music you'll find in these 50 states. The closest I've ever come in person is a hillbilly gathering that went on late into the evening, with mama finally being coaxed into singing "Summertime" to the deep satisfaction of everyone in the little house - every age, every class, every gender, didn't matter. Everyone loved the music.
Here's one that'll give you a feel for it: "Red Rocking Chair"