"Watching The River Flow". I was knocked out by the song when I first heard it, in 1971. I just watched an interview with the drummer on the song, Jim Keltner. He said the rhythm section on the song---Leon Russell on piano (who produced the session), Carl Radle (from Derek & The Dominoes) on bass, and Jesse Ed Davis (from Taj Mahal’s band) on guitar---was the best he was ever a part of.
Jim said Dylan wrote the lyrics to the song at the session, in a few minutes. He also said Dylan was one of the two best rhythm guitar players he ever worked with, Lennon being the other. But then, Jim never recorded with The Everly Brothers or Dave Edmunds. ;-)
The song sounds as great today as it did in ’71. Timeless.