Girl groups. Dance crazes. Lush ballads. Such were the distinguishing characteristics of rock and roll as the music grew and expanded during its wait for the “next big thing.” This list, one of a series from 1955-1979, shows certain soul legends making their case for immortality, a Wall of Sound going up, and more different ways to move your feet than any other year in the music’s history. Contains trivia, recording info, release info, and more.