I'm glad you appreciated it.
There is some weird stuff going on with NOLA R&B from back in the day. Maybe it's the key of G (e.g., "Hey Little Girl"), or maybe Fess and Dr. John were just double-jointed in the RH, or just some tricks. I can fake it pretty good, but some of those boys down south can really pour it on.
Here's a little lagniappe:
ETA That's the equally great Hank Crawford and Jimmy McGriff (doing piano[!?]). Can't ever miss Hank playing his horn. And IMHO McGriff is one of the all-time greats on Hammond organ — I didn't even know he could play piano, but he's surprisingly good as a piano player.