That's what they do. It's consonant, it's in major, it's high and, most important, the rhythm is very uncomplicated.

这就表现他们的音乐,它是协和的,是大调,是高音,并且最重要的一点,这节奏很是简单

耶鲁公开课 - 聆听音乐课程节选

They're these building blocks that support the melody and they have to change for that melody to be consonant all the time.

这些和弦是旋律的基础,和弦的变化必须和旋律保持协调一致

耶鲁公开课 - 聆听音乐课程节选

What about that?Consonant or dissonant?

这样呢，和谐还是不和谐？

耶鲁公开课 - 聆听音乐课程节选