Listening to Arnold J.’s new single, "Muddy Waters," isn't quite like anything else swirling around right now. It arrives with the gentle insistence of incoming tide, pulling you into its specific gravity. Arnold J., Ghanaian-born and now Canada-based, weaves a sound tagged as alt-country and folk, but those labels feel thin, like trying to contain smoke. There’s earthiness, sure, but his soulful vocal lines...

Ken Woods and the Old Blue Gang kick up some serious dust with their single "Ride the Rails," and listening feels less like tapping your foot and more like watching the ground crack open nearby. It’s got that Bakersfield twang alright, bright and wiry, but tangled up with a nervous psychobilly heartbeat and the kind of scuffed-boot roots rock energy that sounds like it’s...