Yes, Lizzie, I remember what I said after listening back to the Cool As Folk archive. The playback wavered around a semitone flat and I actually then imported it to Sibelius and found it couldn't be cured. Changing the tempo or key doesn't help, though admittedly I didn't apply quite as much transpositional experimentation as Bach might have done. I assume somebody imported the wrong harmony track in during editing. CAF made it sound even worse by playing it on a slowed down deck but that wasn't the whole problem by any means.