Everybody seem to like the last Mississippi Fred McDowell video. So here is another, thanks to YouTube. And for all you guitar players out there, this note was also provided:
This is from a web page written by Brian Robertson - "Mississippi Fred McDowell used the D tuning on a fairly regular basis, and one of the advantages is that it allows the high string (D) to play melody or, more often, to play along with the singer, as in his classic, "You Got to Move"
BTW - 'open D' is D A D F# A D
music, blues, video