Don Everly, half of one of rock and roll’s pioneering groups, The Everly Brothers, has died. The musician, known for singing close harmonies with his brother, was 84. With hits like, “All I Have To Do Is Dream,” “Wake Up Little Susie,” “Bye Bye Love” and “Cathy’s Clown,” The Everly Brothers were a sensation in the late 1950s and early …