Elvis Presley might be known as the "king of rock and roll" - but he certainly didn't invent the genre. From the late 1930s to the early 1960s, a string of black-friendly venues throughout the Atlantic seaboard and Midwest played host to legends like B.B. King, James Brown, and Ike and Tina Turner, who were blending swing and blues to create the earliest sounds of rock 'n' roll. We'll take a look at these venues and the musicians who played them with the author of the new book "The Chitlin' Circuit: And the Road to Rock 'n' Roll," Preston Lauterbach, along with funk and blues artist Lee Fields.