As a Christian most of the circles I’m around are pretty chill…no stone-cold fundamentalists. But I have been around people (and even had family members) who are 100% convinced that rock music is evil and will lead people to engage in witchcraft and draw pentagrams all over their home.
The root of the belief is that rock music uses drums, which are used by voodoo tribes in Africa to entrance people.
Along a different track of thinking, from where did rock music originate? Slaves. They created the guitar because slave-owners didn’t allow them to make music with drums.
So then is “rock music is evil” sort of an echo of that attitude?
I’d say that most forms of music have some kind of rhythm instrument, often those are some form of percussion instrument.
I’ve definitely heard some experimental stuff that didn’t use any form of rhythm instruments. Then again, you can just record the ambient sound of a city and call that music, so to each their own.
A cappella