Think you've heard all there is to hear when it comes to John Mellencamp? Until you've tapped into his loose-limbed cover of The Hombres' ‘60s garage rock nugget “Let It All Hang Out”, the piano-laced, Springsteen-esque “Chestnut Street” (from back when he was Johnny Cougar) or his stirringly stark solo acoustic take on Woody Guthrie's “This Land Is Your Land”, you've only scratched the surface.