As many have said, he was - for me, at least - the greatest of the greats.
I saw him with Hiromi at Ronnie Scotts in 2015ish and was so taken with his focus and ferocity that I immediately bought a ticket for the next night's show so I could do the same thing all over again.
Hard to pin down my favourite AJ contributions as his output was so vast and so diverse, but the Michel Camilo (One More Once, Rendezvous) and Chaka Khan (Naughty, What Cha Gonna Do For Me) albums are the ones I keep coming back to.
Certainly a man of principles who stuck to his guns in spite of musical trends. Just dug this out and it's possibly even more relevant now than it was in 1992: