Charles Parker is a pianist whose Beatles Piano Suite is available from Internet Archive. Alternatively, this could be a mistag for Charlie Parker: Charles Parker, Jr. (August 29, 1920 – March 12, 1955) was an American jazz saxophonist and composer. Parker, with Louis Armstrong and Duke Ellington, is largely considered one of the most influential of jazz musicians. Parker acquired the nickname "Yardbird" early in his career, and the shortened form "Bird" remained Parker's sobriquet for the rest of his life