From the recording Live at Notodden '97
Paul loved to play this tune; it was a great vehicle for his blues harmonica playing. But when it came time to release the live CD, there was an issue in licensing the song. Namely: I didn't know the title! Paul always had called it, "Double Turnaround in B." But Paul's introductory joke about Muddy Waters provided a clue, and I eventually tracked down the title thanks to the magic of Google.