Frogman, nothing can compare to seeing, and hearing a great musician in a relatively small space perform.
I've had that experience exactly three times, and each one of them has stayed with me until this day.
Sometime it seems that the audience can somehow project something that causes the artists to perform way over their heads. (not in the case of Sonny Rollins, but what I am about to reveal)
I saw where this group was going to give a live free concert and went. It was an outdoor event on a perfect summer afternoon, and since this was a new group, I didn't expect so many people, but there we were, sitting on blankets in the grass.
These artists performed like they have never performed before or since. I know, because I bought their records, and none of those records compare to that outdoor event where they performed before an appreciative audience.