And the first question I think that you have on the quiz here is the following: what keyboard instrument is playing here?

这里有个小测验,第一个问题是,这段音乐是用什么键盘乐器演奏的

耶鲁公开课 - 聆听音乐课程节选

It's a keyboard instrument.

是一种键盘乐器

耶鲁公开课 - 聆听音乐课程节选