The Greeks did it by the playing of a flute like or oboe like instrument that played a military tune that had you marching forward at the right pace.

希腊人通过类似长笛,或双簧管的乐器发出指令,使之能以正确的步调前进

耶鲁公开课 - 古希腊历史简介课程节选

All right. So you probably read in the book that the bassoon is a double reed instrument, and so just to show you what that looks like-- You've probably seen it but if you haven't, two pieces of wood vibrate together when I blow through them.

好的,你们可能在书上看到过,巴松管是个双簧乐器,我将为你们演示双簧怎样演奏,你们可能见过,如果没有请看我演示,我吹奏时,两个木片会一起震动

耶鲁公开课 - 聆听音乐课程节选