I recently found some data discs containing the iMovie files to a number of my YT videos, including the original of "Nat Riddles - Blues TV." Turned out that I'd cut the raw footage into four clips and put two in the trash. I rescued those and created a short new clip that gives you a little of Nat's playing (at the very end) but mostly gives you a sense of who he was. It might be of interest to some: