You've got to have a text and so we don't have--in eighty percent of classical music-- we don't have lyrics; we don't have a text.

你得有文字,而百分之八十的古典乐中却没有,没有歌词,没有文字

耶鲁公开课 - 聆听音乐课程节选

And we talked about this before--that classical music, probably eighty-five percent of it, does not involve a text, and that's a whole different ballgame because then you have to communicate meaning in a completely different sort of way.

我们之前也说过，古典音乐，大约百分之八十五，都没有歌词，所以这就让这两者产生了本质的区别,听众必须用完全不同的方法理解音乐的内涵。

耶鲁公开课 - 聆听音乐课程节选