Today, the term rembetika is often used interchangeably for either of two distinct musics dating back to before the turn of the 20th century: the rembetika of mainland Greece and the music of the cafe-aman (also called smyrneika) of Asia Minor. Within this century, these musics have been shaped by several major historical events:  the expulsion of the Christians from Asia Minor, the Metaxas dictatorship, and finally World War II and the ensuing Greek Civil War.