I was watching some video of Sister Rosetta Tharpe's amazing performance at Wilbraham Road RR station in Manchester, England, during the 1964 "Blues and Gospel" tour with Muddy Waters, Sonny Terry, Brownie McGhee, Cousin Joe, Otis Spann, and the Reverend Gary Davis. That is, watching it for, I don't know, the 20th or 24th time. It's a great performance. While the music was playing, I was websurfing through some photos of Sister Rosetta on the station platform when something odd popped out. In this photo, we see Sister Rosetta and her famous white SG with an AC 30 behind her and Muddy Waters's telecaster on the chair. But in this nearly identical photo -- Muddy's tele is still there on the chair -- the amp behind Sister Rosetta appears to be some kind of Supro (?). Finally, in the film of the actual concert shot and aired by Granada TV, neither amp (and certainly not Muddy's tele) is on stage in that spot during her or Waters's performance. Something that might have been a small, Gibson-style amp or stage monitor can be seen under a bench to the right of the chair, but the video quality isn't sharp enough to be sure what it is. And it appears to be there only for Sister Rosetta; by the time Muddy comes out, it seems to be gone (but his set was after dark, so maybe it's just a trick of the changing light). I suspect the photos must have been taken during a sound check, and Sister Rosetta wasn't happy with either of those amps. There's nothing more to this post than that -- it just struck me as an intriguing bit of trivia from a historically significant tour, and I decided to share. But if anyone knows more about it, I'd love to hear.