In the last ten years (or so), I have really developed a taste for the primal/tribal music. Overall, I have drifted more toward basic instruments & stripped-down arrangements. Flogging Molly isn't really simple, but Social Distortion is. Poi Dog Pondering is lush & layered and I still love 'em, but the accoustic is beautiful and honest.
What's more basic than drums & pipes? (rhetorical)