You can have your Sinatra, your Marvin Gaye, your Al Green, great singers all. For my money Elvis had the greatest voice of them all. He looks very toasted for this performance but yet still in control. His pure intense sexual energy was only rivaled by one singer and that was Otis Redding imho. Plus he had a great sense of time and consummate musical ability. The human voice, the greatest instrument of them all.
The Tigerman segment has an interesting psychedelic strobe sequence. Don't see a lot of strobe today, do you?