I like interesting stories, especially if they have an "underdog" or "overcoming advertsity" element to them. Jimmy Amadie is in his 80s. He is a jazz pianist who couldn't play for several decades because of tendonitis. So he taught jazz instead and wrote a couple of cool books. If you want to learn how extended chords and tensions work, I highly recommend his book "Harmonic Foundation of Jazz"
, it does an excellent job of teaching that stuff. I believe it's out of print, and hard to come by, so you end up paying a premium for bootlegged copies of it on Amazon. If you'd like a copy, contact me and I'll see if I can arrange for a legit and cheaper alternative.
Surgery allows him to play a little bit nowadays. If you go to his website, you can listen to streaming audio of his recent recordings. He plays pretty nicely, although to be honest I'm not a big fan of his staying in the upper registers all the time, but nonetheless I've got a couple of his albums and will listen them out once in a while. Jimmy Amadie
Like I said I'm not a huge fan of his bebop lines, but I very much like the way he harmonizes the changes.