First, "The Wrote and the Writ" by Johnny Flynn, an artist I've just discovered. I chose it because of the syncopated guitar and the outstanding lyrics.
Second, "Right Moves" by Idaho's own Josh Ritter. Ritter been one of my favorites for about six years. He isn't instrumentally out of this world like some of the other artists here, but he's a great songwriter. It's hard to find a representative song for him for a first exposure, but this seems like a safe bet.
Third, "Simple as This" by Jake Bugg, another new discovery. Great lyrics.
Fourth, "Don't Need No" by Punch Brothers. I've seen these guys live and they are amazing.
Fifth, "Big Parade" by Lumineers. These guys are from Denver and actually, they are quite popular now. So not everything on this list is obscure.
Kate Wolf and Don Lange, Rock Salt and Nails