Brothers Cody and Luther Dickinson are the North Mississippi Allstars. Their new album is titled World Boogie Is Coming. Jay Adkins/Courtesy of the artist hide caption

itoggle caption Jay Adkins/Courtesy of the artist

L-R: The North Mississippi Allstars' Chris Chew, Luther Dickinson and Cody Dickinson celebrate the late Jim Dickinson on Keys to the Kingdom. Jason Thrasher hide caption

itoggle caption Jason Thrasher

One of the two known photos of Robert Johnson. This portrait was taken by the Hooks Bros. Photography Company in Memphis, Tenn., circa 1935. Courtesy of the Delta Haze Corporation hide caption

itoggle caption Courtesy of the Delta Haze Corporation