Now, this cover is kind of wild. The band is great; the singer, well, um, strange. I do have to say that the willfully-lacking vocal tone that is nearly universal among male bluegrass singers is as personal opinion not a good thing. Though on the other hand I didn't have an Elvis impersonator in mind when thinking the above.
Worth listening to, actually. If nothing else to hear an awesome band and a sound likely never heard before.