Was a young firebrand pianist in Charles Lloyd's 60's flower-power quartet, who could add some nice thorns to the bouquet. Joined Miles Davis' group in the early 70's, playing organ and electric piano. He went totally (and vehemently) acoustic from there, recording monster LPs with his "American" (Impulse Records) and "European" (ECM) quartets, but gaining fame mainly for his solo recitals. Now a Grand Old Man of the music, and still fascinating.