Casey Kasem was at the height of his powers as the 1980s began. The countdown show that he launched on July 4, 1970, "American Top 40," was now an international phenomenon and could be heard on over 500 stations around the world. Casey had made rooting for your favorite single's climb up the Billboard charts akin to a sport — would your favorite song be played after the drumroll this week? He even branched out to a Top 10 countdown television show. However, you could also make the case that his success led to his own demise as "American Top 40" attracted competitors, particularly in the form of radio disc jockey Rick Dees. This episode moves beyond the 70s and into 80s, following the changes in the music and the show itself, leading to the end of Casey Kasem's reign as the king of pop music countdowns.