Final answer:
Rock and roll emerged in the 1950s, influencing the entertainment industry with stars like Little Richard and Elvis Presley and promoting racial integration in music. It became a defining sound of the era, celebrated by youth and challenging social norms.
Step-by-step explanation:
Rock and roll began to take shape in the year 1950s, with its roots attributed to the merging of various music styles, including rhythm and blues, jazz, and country music. Figures such as Sister Rosetta Tharpe with "Strange Things Happening Everyday" and Jackie Brantson's "Rocket 88" are often mentioned when discussing the earliest recordings that defined the rock and roll sound. This genre gained immense popularity with teens and became highly significant to the entertainment industry due to artists like Little Richard, Bill Haley, Chuck Berry, Fats Domino and Buddy Holly, who introduced a fresh and vibrant music that resonated with the youthful spirit of the time.
The advent of rock and roll also played a part in the social dynamics of the era. It blazed a trail for racial integration in music, with white audiences embracing the sounds that originated from African American communities. The involvement of white artists like Elvis Presley in the genre further catapulted it and created a platform for cultural interactions that challenged the racial boundaries of the time. By the end of the 1950s, rock and roll had established itself as an influential and controversial force in American society and culture.