Now the instrument is--that is--playing is a low tuba, a low brass instrument.

现在在演奏的乐器,是低音号,一种低音铜管乐器

耶鲁公开课 - 聆听音乐课程节选

And then finally we could add that--the idea that maybe with a lot of electronic basses and things like that that they play--they tend to play the bass just louder.

然后最后我们可以添加这个，一种很多电贝斯和其他同类乐器演奏的方式,倾向于将低音演奏得响亮一些。

耶鲁公开课 - 聆听音乐课程节选