In the years following World War II rock 'n' roll arose, drawing from roots in blues, jazz and country music.Rock and roll was magnified with the rise of the teen demographic.The number of potential fans had been in more demand for rock and roll,which increased its exposure, and that attracted more people. It signaled a number of profound changes in American society and accelerated the progress of various social trends. Its effect can still be felt today, not only in music, but also in western culture as a whole.