Great moments at the foundations of rock 'n' roll: Mississippi Fred McDowell, "Goin' Down to the River"

All the best rock 'n' roll is indebted through and through to the blues music produced by African-Americans, first in the American South in the first half of the 20th-century and then moving a bit north (to cites like Chicago) after WWII.  (I've occasionally noted examples before.)  For the remainder of the summer, I'll be featuring some of these gems, some familiar, others hopefully not.   We'll start with Mississippi Fred McDowell (the Rolling Stones made another of his songs famous to a new generation in the 1960s).

ADDENDUM:  Here's a short documentary from 1969 about McDowell (just a few years before his death), produced by the University of Mississippi.