The document discusses popular music and musicians of the 1950s. It focuses on the rise of rock 'n' roll and some of its foundational artists like Bill Haley and His Comets, Elvis Presley, Jerry Lee Lewis, and Buddy Holly. These musicians helped popularize rock 'n' roll music among teenagers in the 1950s through its blend of blues and gospel styles and strong backbeat. The document also briefly profiles some non-rock musicians who were popular in the 1950s, such as Frank Sinatra, Nat King Cole, Perry Como, Dinah Shore, and Johnny Cash.