6/6 Another chance to hear Paul Sexton 's profile of Mississippi-born blues singer, songwriter and guitarist Robert Johnson , who died - probably from poisoning - in 1938, aged 27, unaware of the immeasurable impact his relatively few recordings would have on postwar Chicago blues, jazz, R&B and rock. This final programme explores the three possible burial sites for Johnson, and features an interview with the 80-year-old widow of the grave-digger who buried the blues legend back in August 1938. Contributors include John Hammond , Taj Mahal and BB King.