<span> Greek chorus was a troupe of actors whose main function in Greek drama was to provide commentary (either through speaking or song) on the dramatic actions performed within a play. This was almost always done in unison.</span>
The author uses the phrase "tonal quality" in paragraph 5.
There could be a few terms but I would say analysis.
The term cliche means its a phrase or sentence that is old and used over and over too many times.
hope that helps
