One more since this thread hasn't dropped too deep into the archives. First the original without a Sax. Then the Cover with a Sax.
I was again listening to the Joe Ely bootleg but now legit "Live Chicago 1987" and forgot that Bobby Keys was there to play sax. Keys was a Texas boy who played all the cool sax parts for the Rolling Stones and also performed on a huge number of songs with other artists, some of which are in this thread. Here's "Fingernails" from Live Chicago plus another song he did with a guy almost as famous as Joe Ely.