This is a truly outstanding audio recording, and its interesting to see the video part of the various other musicians, many of whom were well known at the time and have become more so.  The back up singers are exceptional in their own right - really, all of the musician there were.  I really liked watching the interaction with the band 'members', as you can tell how much fun they were having.  I ran across a reference to this in a review of a Processor I was looking to buy, and thought if they liked it so much, that maybe I would.  And I do. The video recording is not as sharp as the audio part - which is really outstanding.