Okay. So that's the music. Now having done this setup, if you think about it, and think about the fact that what note symbol gets the beat in our course- quarter note, okay.

好,这就是音乐,做过这一套以后,如果你在思考,那么想一想,在我们课程中用来代表节拍的是什么音符,四分音符,好的

耶鲁公开课 - 聆听音乐课程节选