I have the DVD of The American Folk Blues Festival 1962-66 VOLUME 2.
It ends with Big Mama Thornton leading a harmonica fest. featuring Shakey Horton, J B Lenoir, Doctor Ross, John Lee Hooker and herself of course all taking choruses on the Down Home Shakedown. 5 for the price of 1. Sonny Boy Williamson also gets 2 tracks on the DVD and Sonny Terry's on another. Just watching it now reminds me I need to buy the other volumes in the series.
I've always loved John Mayall's Blues City Shakedown as a tune.
and of course Dr Ross deserves an honourable mention for giving guitarists the chance to imitate the harmonica with Cats Squirrel.
Incidentally who's doing that Foxchase I'm hearing on an advert on TV at the moment ? Wayne Raney or Sonny Terry perhaps ? I suppose it's a generic style. I can't remember the product but the sound track's made a good impression on me :-)
