Robert Plant/Alison Krauss: Raising Sand

Both Plant and Krauss have ventured beyond the respective genres for which they’re best known, but never as far out on a limb as they’ve gone on their duo debut, Raising Sand.

Source: http://www.umc.org/site/apps/nlnet/content3.aspx?c=lwL4KnN1LtH&b=2892625&ct=4787941