Apparently this is the opening number of the set. If this is how Dr John warms up an audience, who am I to argue?
At this point I think that Hot Tuna is any collection of musicians that has Jorma Kaukonen out in front. (And man does that Martin he's playing make my mouth water.)
And finally, to quote one of the commenters on the YouTube thread: ah, hell yeah. This performance was about 40 years ago. That's Jesse Ed Davis on guitar, by the way. Have a good weekend.