They Left Us Too Soon

Lipatti at his final concert

Dino Lipatti was one of the greats who didn't get a fair shake. You can hear his last public performance of Mozart K. 310, September 16, 1950, here: Lipatti's final performance, a concert he was unable to finish. He was 33. If you want to read more about that event, go HERE.
I grew up on his recording of the Grieg concerto, a definitive performance still.

William Kapell

     William Kapell, killed in a plane crash at the age of 31 while on tour, was near the start of one of the most brilliant careers ever. He was compared to Horowitz. His recording of the Khachaturian concerto is still a benchmark. Here he is playing Mephisto Waltz.