It sounded hip to... Everything was a tritone substitution.

很时髦… … 一切都三全音替代。

And these two notes in the bass, that's a tritone interval.

低音中的这两个音符，就三全音程。

Okay, let's play the tritone again.

好吧，让我们再演奏一次三全音。

Now, like, actively try to hear the other thing and if you can, raise your hand—okay, okay let's play the tritone again.

现在，积极尝其他声音，如果可以的话，举手——好吧，好吧，让我们再次演奏三全音。