In the mid-1950s, Rock and Roll slammed into the consciousness of the American people. Whether you liked it or not, there was no denying that Rock and Roll had arrived. It was the first American musical tradition constructed from the many musical traditions that animated life in the 20th century, including Gospel, Blues, Country, Jazz and R&B. In bringing together these musical bloodlines, Rock and Roll also brought people together, from across regions, across race and class lines, and, finally, across oceans. It was the beginning of a historical turn that would change daily life in the modern world. This first section, The Birth of Rock and Roll, explores the roots of Rock and Roll, its emergence and its entrance into the cultural mainstream of America.