In December of 1942 Frank Sinatra was booked for a series of shows at the Paramount Theater in New York City. The 27-year-old singer had recently parted ways with Tommy Dorsey and was unsure if he'd make it on his own. Much to his shock, a small army of teenage girls swarmed the theater on the first night and went absolutely crazy when he took the stage. "The sound that greeted me was absolutely deafening," Sinatra recalled years later. "I was scared stiff. I couldn't move a muscle." The fans were labeled "Bobby soxers" because they were forced to dance at clubs in their bobby socks so their shoes wouldn't damage the floor. This mania around Sinatra occurred more than 20 years before Beatlemania, and it was the country's first glimpse of how the teenage culture would evolve in the second half of the twentieth century.