Sandy Mclean wrote:

Jimmie Rogers is often called the "Father Of Country Music". However, his style was highly influenced by Mississippi Blues. The Carters are called "The First Family Of Country Music." Their style was mountain folk music.

Jimmie Rogers played a mixture of Anglo-celtic mountain music with blues but the Carter Family played a mixture of Anglo-Celtic mountain music, white gospel, Blues and Negro Spirituals. Generally speaking, "oldschool" country music is like Anglo-celtic music combined with Blues.