The temptation would be to play “Raining Blood” and get extremely excommunicated. “South of Heaven” you could argue is a musical Hieronymus Bosch painting. “Disciple,” less so. For apostasy that cheeky locals could reproduce on a lute, do “The God That Failed.”
Probably the least riot-inducing song that’d still leave the aristocracy struggling to deal with the experience is Anamanaguchi’s “Endless Fantasy.” To people intimately familiar with wind and string instruments, and for a song that Jackson Parodi managed to decently reproduce on a goddamn accordion, it’s juuust enough to leave everyone wondering how the hell humans made those noises. It’s also obscenely energetic. Nevermind concert halls, play this at cafe that’s just imported tobacco and watch some men in hosiery get off their asses. All of that goes double for “Prom Night.” None of these people have ever heard a square wave.
Somewhere in-between, I’d suggest any Flaming Lips album. At War With The Mystics might go over quite well, at first.