"The Things I Used to Do" Live in Tokyo

I'm trying to find out who did this R&B classic, I taped it off the radio years ago. Incredible guitar sound.
I know it's a Guitar Slim song, but it's not him; could be Albert Collins or Buddy Guy?, but can find any reference to this song done by either in Japan. And the guitar doesn't sound like a Fender...could be wrong though.
Any clues?
Pete McK