FYI, this is a Mardi Gras Indian outfit, which is pretty weird to see on Dr John and possibly offensive since, ya know, he's not black and they are. But who knows, maybe one of the tribes had him do it.
I saw him in San Francisco in like 1998-99, he was playing with the Dirty Dozen Brass Band. It was AMAZING! I got it! It was at Mardi Gras by the Bay at Shoreline. Save for the 'bayou witch doctor costumes' it was one of the best shows I've ever been too!!!