For me, any discussion regarding jazz begins and ends with the greatest jazz pianist (...no, make that the greatest pianist of the 20th century), the genius...Art Tatum.
Art Tatum is great but in my humble opinion Keith Jarret is better.Keith Jarret:The best jazz pianist everThe most versatile pianist everThe best improviser of 20th centuryHis recordings of Goldberg Variations and The Well Tempered Clavier are wonderful.