That choir was TERRIFYING
I'm talking about the mutated humans taking off their masks to reveal their hideously deformed faces, before bursting into song en masse to worship the Bomb they have in their "church".
I mean, the sight was bad enough, but the musical notes, keys and chords were all completely off, like a nightmare version of the original tune, and it all sounded horrible. Of course, the mutants will never know how it originally sounded, but this, to them, is acceptable! MADNESS!