How useful is Peterson’s perspective of rock and roll

Its very useful because he made us know how rock n roll started and also people that made it what it is today. He also goes on to explain how law took over from jazz with artist like Frank sinatra giving way to the arrival of new creative artist like Chuck berry and Elvis Presley. Its is also said by the time rock n roll started that was the same time radio and television was created and with this media factors rock n roll went on to bigger stage because there were more young viewers and more people to listen to them and have TV sets in their houses. He also spoke of how the revolution of rock started, he said how Presley took advantage of his opportunities because in the 1948’s there was the blues music by T-bone Walker and Louis Jordan but when it faded Presley been who he was came out with something similar but different and than after it became popular, everyone just feel it love with it.