009219 music By miss.parsons Period: Jan 1, 1900 to Dec 31, 1999 20th Century Dec 31, 1940 Rock and roll evolves. Rock and roll evolves during the late 1940s and the early 1950s. Dec 31, 1950 Decline of rock and roll. Rock and roll in decline in the late 1950s and there early 1960s.