I dont know about the Greatest song ever but it is pretty tight...I dont have a personal favorite because there are so many tight ones that Ive heard in my life and its hard just to choose one.
There is a lot of tight tracks from "Uncle Sams Curse". I don't know about "Black Superman" being the tighest song ever, but there is one thing I can agree with.......and that is "Uncle Sams Curse" is one of the best LP's ever made from start to finish. I would still have to say that "Kalifornia" is the tighest track from that LP. But, all the tracks are tight. These is not one lame track.