George Hamilton IV

Proclaimed the International Ambassador of Country Music thanks to his world tours in the '70s, George Hamilton IV began his career in the late '50s as a teen-oriented pop star. After his first hit, "A Rose and a Baby Ruth," hit number six on the pop charts in 1956, he toured with Buddy Holly and the Everly Brothers. However, his later pop efforts stalled on the charts, and in 1959, Hamilton joined the Grand Ole Opry.