Gary Clark Jr. enlisted veteran soul singer William Bell to deliver a blistering version of "Born Under a Bad Sign" at this year's Grammys.
Clark and Bell traded off vocals on the foreboding blues rock classic, which the latter co-wrote in 1967 with Booker T. Jones for
This article originally appeared on www.rollingstone.com: Watch Gary Clark Jr.’s Blistering ‘Born Under a Bad Sign’ at Grammys