If I recall correctly, in the old days, people used to believe that the tritone interval was demonic due to how bad it sounded. Using that as a measuring stick then, Impressionism (especially Debussy's Prelude to the Afternoon of a Faun) and everything that came after is to be avoided.
Meanwhile, I believe Glenn Gould said once that all of Bach's music was dedicated to praising God.
oh God ;-;
Just in case someone returns to this thread, I just want to clarify:
This post is poorly written.
And even then, it's still incorrect. If you watch the video this poster has posted, nobody made a contract with the devil. That's not what was said. What was said about Nietzsche is that he, and I quote, "in a sort of demonic consecration", went out and deliberately contracted syphilis in order to dedicate himself to the sexual revolution.