Rock and roll's various musical ingredients are examined, including jazz, blues, country, folk and gospel. Also explored are rock's early musical trends such as rockabilly, doo-wop, girl groups, surf music, teen idols, R&B and soul. Additionally, rock and roll was impacted by technological advances such as the transistor radio and the 45rpm record, cultural and social movements, fast-talking deejays, the emergence of the teenager, revolutionary dances such as the Twist, payola, and the rise of independent record companies. The book concludes with the arrival of the British Invasion.