Earl Rudolph "Bud" Powell (September 27, 1924 – July 31, 1966) was an American jazz pianist and composer. Along with Charlie Parker, Thelonious Monk, Kenny Clarke and Dizzy Gillespie, Powell was a leading figure in the development of modern jazz. His virtuosity led many to call him the Charlie Parker of the piano. Powell was also a composer, and many jazz critics credit his works and his playing as having "greatly extended the range of jazz harmony".

Source: Wikipedia (https://en.wikipedia.org/wiki/Bud_Powell)