Talking of Mike Cooper, here's something that I posted 11 yrs ago! on a Les Cousins thread.

I see Mike Cooper gets a mention in one of the previous postings. My "Les Cousins" memory of Mike is rather weird. One night ( late 60s?) Mike was doing his spot when an harmonica player asked if he could join Mike. I assumed that Mike knew the guy, and they proceded to tune up. About 30 seconds into the first number, the harmonica player stopped and said that they weren't properly in tune, and so, once again they went through the tuning up process. They then launched into the song again whereupon the harmonica player stopped again complaining that they were not in tune. At this point, Mike lost his cool, raked his tumb-pick across the strings of his guitar and said, "I'm in tune, man!". And that was the end of the duet. I was surprised at Mike's reaction , as, of course, it's the guitarist's responsibilty to tune to the harmonica. I've always wondered what Mike's version of that incident would have been