Rock and Roll was not just a new attitude or a new energy in musicit was a new sound that rejected swing rhythm in favor of straight rhythms that brought a new urgency and force to popular music in the United States. The new sound was used by a wide range of artists to achieve very different expressive results. Tell me how the Beach Boys and Jimi Hendrix) their own musical voices were expressed through rock and roll. Use specific musical examples from both artists to show how their authenticity was communicated in musical terms using the new style of American music.