I see the comment on the video:

Hi sindesign,
The music is from Ken Whitfield
in remembering of Mississippi John Hurt.
Nevertheless,a very beautiful poster design.
Thank you.

sindesign (2 months ago)
So it is, my apologies, such a good cover it's easily mistaken. I've updated the info to correctly credit Ken.

And the heading: Music: Ken Whitfield's cover of "Dirt Road" by Mississippi John Hurt

Looks like a straightforward misunderstanding - and a flattering one. First he thought you were John Hurt playing and singing, and then assumed it must be a John Hurt blues you were playing. I would rather assume that there will be a further correction if "sindesign" is reminded to put one in.

After all he couldn't very well have asked John Hurt's permissioin in the first place, since he's long dead.