The man who played piano on virtually all of Chuck Berry's hits was 80:
http://news.yahoo.com/news?tmpl=story&u=/nm/20050414/music_nm/people_johnson_dc
I met him backstage when he was playing with Bob Weir's Ratdog, back in '96. I had a pretty cheezy Apple Quicktake 150 camera back then, and have been searching for my photos. Apparently the band had to change the keys of some songs because Johnnie only played in certain keys.
