I've just heard this for the first time, and I have to say that my mind is a little blown by it. It seems impossible to categorise this album because it simply isn't like anything I've heard previously. It gives the impression of being utterly organic, deeply rooted in nature, and unconstrained by the formulas which dictate the progression of most music. Justin Vernon has created something impulsive, impenetrable and remarkable, an album which is bottomless but without a shade of artifice. It's not a particularly easy listen, but if you have any interest in innovative music then this comes highly recommended.