Music: The Rock Is Solid

Is the golden glottis gurgling to a stop? Is there a quiver to those rosebud lips, a beginning of wilt to those poodle-wool sideburns? For two years, lovers of peace, quiet and a less epileptic kind of minstrelsy have waited for Elvis Presley and the adenoidal art form, rock 'n' roll, to fade. But knowledgeable disk jockeys and trade bulletins offer such purists little hope. In spite of previously noted tremors, last week rock 'n' roll looked solid as Gibraltar, and Elvis—with a new stomp-and-holler hit, Jailhouse Rock (RCA Victor)— was perched right...