Hi , There are so many incredable people of Robert Johnson's era and earlyer.. Have a listen to Lonny Johnson. Blind Blake, Blind Willy Johnson, Skip James(A faverate) Tommy Johnson, Big Bill Broonzey. The list realy isnt endless but can get long, and very exciting ! Robert came from somewhere and lots happened after his passing.. Have a listen to his work in context to the times and it will get even bigger for you.. All the best , Guy Wolff