Usually satanic songs are thought as being some heavy rock and about committing sins, but Imagine is way more horrific in its WEF like end-goal while also presenting itself as clean and uplifting.
BTW I think that kind of thing is where Satanism actually thrives.
There's this Hollywood image of demons and Satan working through things like serial killers, cults, what not. And I won't say that doesn't play a role, but I don't think you really need it. Serial killers, for example, are in a way as natural as it gets, they're sick perverts that like torturing people and playing with corpses, they're better at it than an animal because they've got enough intelligence to really apply themselves to it, but it's ultimately the same thing as a cat toying with a mouse, just pure bestial malice.
Humans, on the other hand, have this incredible ability to destroy themselves and everything around them through their own (supposed) good intentions. They also do things that are just deranged and self-destructive in ways no animal would think of. No animal would think to tattoo itself and stick a bone through its nose. No animal would come up with a practice like crippling its daughters feet so they look "hot." And no animal would invent something like Communism. There is something
deeply broken in the human mind, and it comes straight from the imperfect nature of people being able to think through right and wrong without having sufficient wisdom to handle that. So they try to play God and fail horribly at it.
Satan operates like a mind virus, a meme, steering whole societies towards spectacular acts of self-destruction or perpetual immiseration in ways both small and large. Mass movements.
The heavy rock stuff with demon imagery and sex drugs and rock and roll is just childish. It
can have its harm, but the people that go in for that stuff - musician and fan alike - are playing with the smallest demons in a whole army of Hell.
Edit: Read about revolutionary hysteria in any totalitarian regime. Chinese started straight up eating people in Guangxi, not from famine, but as part of mass hysteria in the Cultural Revolution.
Idk, I think turning every church from well practiced choir hymns and calming instruments into some dude named Kyle playing three chords while his boyfriend plays percussion on a box he’s sitting on deserves quite a bit of hate. Really kills any sense of refinement and turns the religion into a weak, emotion driven camp for preteens. If I were the antichrist that’s also probably about what I would want to achieve
Does it have to be slower and calmer to qualify as a hymn?
A lot of gospel and gospel-influenced music is upbeat and happy but is still designed to be sung by a crowd (as for corporate worship) and still has a distinct religious feeling (just one of triumph/joy/ecstasy instead of wonder/awe/peace; both are legitimate and even necessarily complementary parts of religious experience).