Open tunings are as old as the guitar itself, and they’ve been used to play blues, folk, country, rock and old-timey music.

Who’s known for using open tunings? Artists as diverse as Robert Johnson, Bob Dylan,MaybelleCarter, Bo Diddley, Blind Willie McTell, Keith Richards, Doc Watson, Muddy Waters, Joni Mitchell, Ry Cooder, Neil Young, Fred McDowell, Jimmy Page, Son House, John Renbourn, Leo Kottke, Ani DiFranco, Alex de Grassi andPierreBensusan!

In this 92 minute lesson, Fred sh...