For centuries Eastern Churches only employed the semantron, usually an elongated piece of wood that is struck with a hammer, to gather the faithful. Eventually, most adopted bell ringing, even though semantra continue to be used by some Orthodox Churches. In the West bells were rung for the same purpose and the semantron was unknown. As a result, Western pilgrims, diplomats, and other travellers to the eastern Mediterranean were astonished and intrigued when they encountered the instrument. This article looks at their descriptions and discusses how the instrument and its sounds were used to other Oriental Christianity.