Generations: The Real Differences Between Gen Z, Millennials, Gen X, Boomers, and Silents—and What They Mean for America's Future

by Jean M. Twenge

The musicians most associated with hippie culture were mostly Silents, like Jimi Hendrix (b. 1942) and Janis Joplin (b. 1943). Even the Beatles, whose music traveled the trajectory of the ’60s from upbeat early in the decade to psychedelic later on, were all Silents.