This week: More than 100 years ago, a child was born in Mississippi – a dirt-poor, African-American who would grow up, learn to sing and play the blues, and eventually achieve worldwide renown. In the decades after his death, he has become known as the King of the Delta Blues Singers, his music expanding in influence to the point that rock stars of the greatest magnitude – the Rolling Stones, Bob Dylan, Eric Clapton, the Allman Brothers – all sing his praise and have recorded his songs. Here's an hour of live recordings of great artists covering Robert Johnson songs.

From the Roots of the Blues to the Fruits of the Blues.