I own this on DVD, but to this day whenever it shows up on PBS (roughly every 24 hours, where I live, lol!), I am compelled to watch it start to finish.
There is a phenomenal array of musicians on stage, all there to play with one of the greatest talents in musical history. It's quite possible that a lot of people think Elvis and Chuck Berry when they think of the start of popular rock and roll music, but Orbison's writing, musicianship (and that voice!) tower over the others of that era. The presence of all the other names doesn't make one think of a 'star studded' VH1/MTV made-for-TV extravaganza, but more a group of able musicians both paying homage and participating in a real musical performance, in concert with each other, not taking star turns even as they step up to play a solo or sing with 'the master'.
All the players are fantastic and are thrilled to be there, but Springsteen in particular looks like a little-league 11-year old getting to play ball with Mantle, Ruth, Robinson and Aaron. His awe and exuberance at being there mirrors what anyone has to feel watching this show.
(and a P.S. - no audio problems on my disk or on the televised version.)