Well,what I'd like to do now is move here to a couple of additional pieces, and we're going to use an example of pop music now with a three-chord chord progression.

那么，我们现在要做的是再看其他一些音乐，然后我们会用流行音乐的例子来看看三和弦进行。

耶鲁公开课 - 聆听音乐课程节选