The Grammy Award-winner recorded "Nothing From Nothing" and "Will It Go 'Round In Circles." He also wrote Joe Cocker's smash, "You Are So Beautiful."
Preston also worked with "The Beatles" and "The Rolling Stones," playing keyboard on songs like "Get Back," and "Can't You Hear Me Knocking?"
He had been in a coma since November, suffering chronic kidney failure. Billy Preston was 59.