Rock ‘n’ roll historians invariably tracethe roots of the now-expansive, constantly morphing music to a Mississippi bluesman named Robert Johnson, a 1930s guitarist who ostensibly made a deal with the devil – trading his mortal soul for stellar talent - one night at a rural intersection (a “crossroads”). Johnson’s canon of songs, bolstered by his pioneer legacy and dark mythology, is embraced universally as being instrumental to the very structure of rock ‘n’ roll.