Which of the following artists recorded the first rock-and-roll hit to enter the Billboard music charts?
O A. Chuck Berry
O B. Bill Haley
O C. Fats Domino
O D. Elvis Presley

answer; i believe that the correct answer is ; ///new concepts of melody,harmony,and rhythm;

hard bop is an extension of bebop that was kind of interrupted by the cool sounds of west coast jazz. it experienced its revival in the 1990’s.