Producers say: "Sidemen takes us on the road with Pinetop, Willie and Hubert, three of our last direct links to the origins of the blues, as they share the incredible stories about each of their personal histories.

"From their upbringings on Delta plantations of the Jim Crow south to lives spent on the road in the shadow of two of the biggest figures in music, their stories are not only a part of music history, but American history as well.