> I looked this guy up; he's a bona fide composer, apparently. According to his website, he's a Harvard and Oxford grad that's studied music. He's also a prof

> I looked this guy up; he's a bona fide composer, apparently. According to his website, he's a Harvard and Oxford grad that's studied music. He's also a prof at Princeton in their music department (which is no small feat). It's likely that he's using terminology that's more common in certain circles. If you get into music theory at the top-tier music schools and other high-end educational institutions, the way they talk about music is going to be different than how most practicing musicians talk.