The Watering Hole

I was flipping through some free Comcast On Demand music concert segments and found one from Deep Purple (two songs).  These were taken from a Montreux Jazz Festival. While both were really good, the second one was very interesting because they started out with a couple of minutes of a very cool jazz jam before going into Smoke On the Water.  A very nice surprise actually!  :)

Has anyone else seen this footage?