Encyclopædia Britannica on Elvis Presley

“When it was announced in early 1958 that Presley had been drafted and would enter the U.S. Army, there was that rarest of all pop culture events, a moment of true grief. More important, he served as the great cultural catalyst of his period, projecting a mixed vision of humility and self-confidence, of intense commitment and comic disbelief in his ability to inspire frenzy. He inspired literally thousands of musicians—initially those more or less like-minded Southerners, from Jerry Lee Lewis and Carl Perkins on down, who were the first generation of rockabillies, and, later, people who had far different combinations of musical and cultural influences and ambitions. From John Lennon to Bruce Springsteen, Bob Dylan to Prince, it was impossible to think of a rock star of any importance who did not owe an explicit debt to Presley.”

“He personified a new form of American popular music in the mid-1950s. Rock and roll was a guitar-based sound with a strong (if loose) beat that drew equally on African American and white traditions from the southern United States, on blues, church music, and country music. Presley’s rapid rise to national stardom revealed the new cultural and economic power of both teenagers and teen-aimed media—records, radio, television, and motion pictures.”