Ali Farka Touré was perhaps the most influential and widely celebrated African musician in history. He adapted his ancestral music to the 6-string guitar. The results are brilliant. I won’t say much more, there’s been more than enough written on Ali in the last while. I’m too lazy to link most of it here, but you can get a good start with NPR’s tribute piece and Banning Eyre’s Village Voice obit.
Side note: this tape reminds me of John Fahey, another enormously influential late folk/roots guitar hero.
A good record that includes music from this era of his career.