We had that very interesting piece last time, "Polish Oxcart" where he used this principle of low sounds produce sound waves that stay forever and we hear those low sounds first and last.

上次我们听了一段很有意思的曲子,《牛车》,当时他运用低频声音,持续时间长的原理,我们在最初和最后听到的都是低音

耶鲁公开课 - 聆听音乐课程节选