我们唱过主音吗，主音是什么？

Did we do tonics? Do we know what a tonic is?

youdao

我们说这就是主音。

We said this is the tonic.

youdao

它总是一个半音级，总是如此，第七级刚好在主音下面。

It's always a half step — always a half step — seventh degree, right below, right below the tonic.

youdao

Even though we are continuing to hear sound, harmonically, psychologically, we know we're finished when he hits that particular tonic.

尽管我们依然能听到声音，有共鸣，感到震撼，但是在他演奏到这个主音的时候，我们知道结束了。

耶鲁公开课 - 聆听音乐课程节选

Music gravitates around a home pitch and in the Beethoven Fifth symphony we still haven't gotten the home pitch.

音乐的音高一般会围绕着主音高浮动,在贝多芬的第五交响乐中　,我们还没发现这个主音高

耶鲁公开课 - 聆听音乐课程节选

We simplify it by saying this: that there are three fundamental textures: monophonic texture, homophonic texture, and polyphonic texture.

简而言之,有三种基本织体,单音织体,主音织体和复音织体

耶鲁公开课 - 聆听音乐课程节选