Around 1945 , Dizzy Gillespie stopped working with Parker and Parker hired Davis as Gillespie 's replacement in his quintet . Also in the group were Max Roach at the drums , Al Haig ( replaced later by Sir Charles Thompson and Duke Jordan ) at the piano , and Curley Russell ( later replaced by Tommy Potter and Leonard Gaskin ) as bass player . Around 1945 , Dizzy Gillespie parted ways with Parker , and Davis was hired as Gillespie 's replacement in his quintet , which also featured Max Roach on drums , Al Haig ( replaced later by Sir Charles Thompson and Duke Jordan ) on piano , and Curley Russell ( later replaced by Tommy Potter and Leonard Gaskin ) on bass .