接下来，就是去找听力材料了。

The next step is to find listening resources.

youdao

听力材料必须是你能理解的，而且要反复听。

Well, it must be understandable and must be repetitive.

youdao

所以，我们应该多找些听力材料练习我们的听力。

So, we should find many listening materials to practice our listening skills.

youdao

This material will be necessary to do the listening exercises for the course, which is sort of the backbone of the course.

做听力练习时我们必须使用这些材料,听力训练是课程的核心内容

耶鲁公开课 - 聆听音乐课程节选