From the site:
While not as well known as Al Jackson or Roger Hawkins, Gene Chrisman was one of the old-time session guys who knew how to play on hit records. If you've never really listened hard to his track on "Son of a Preacher Man", you're in for a treat. Dig the way he plays that quarter-note hihat pattern and how he switches to a Latin rhythm on the bell later in the tune. Most amazing, IMO, is the way he doesn't start playing hysterical fills going into the chorus and he really just locks in the time without rushing. It's really hard not to rush going into that part of the tune. Frankly, I'm surprised the producers didn't ask him to play some fills there, but my guess is that it was so good they just left it alone. Anyway - now you know who Gene Chrisman is. Enjoy.