Not trying to take over this thread, but I thought it worth mentioning that I picked up a new Rolling Stones release of old material. The reason I mention it is that it's "El Mocambo 1977", the Stones gig that April Wine opened for and resulted in the "Live at the El Mocambo" recording I mentioned earlier. This Stones album (that I'm listening to right now) contains a lot of classic Stones tracks with some blues standards. Can't believe how good (sonically) this sounds, you wouldn't know it was recorded in '77. The people who mastered the tracks did a great job.
Anyway, if you're a Stones fan, I highly recommend it.