I am working on this piece right now. Read an analysis that I absolutely Loved.
“A serene bass and a hot-tempered upper voice argue in the prelude ending in a fugue that is a classic example of baroque fugue technique.
We enter at the climax of the debate. The bass represents the balanced opinion, stated in a serene yet self-assured tempo. But the rather breathless, hot-tempered triplets of the upper voice suggest that it has long since abandoned reason. Despite all its down-to-earth comments, the bass comes off worst – pounding out a few more individual notes, and eventually giving up completely. Only then do the quarrellers embrace one another in a glorious figured major chord”
it's not necessary 