Jazz pianist who collaborated with renowned trumpet player,
He started playing the piano when he was just four years old and was largely a self-taught pianist, despite attending New York's High School of Music & Art. He joined several R&B groups and began performing professionally in the early 1940s.
He replaced Red Garland as Miles Davis' primary pianist, beginning his musical collaboration with Davis in 1959.
He was born in New York City to Jamaican immigrant parents.
Kelly recorded the 1948 hit song, Cornbread, with saxophonist Hal Singer.