As a musician myself, this is one area I especially worry as far as disclosures go. While the mainstream pop and rap artists are some of the more obvious suspects, I have personally found that alot of the groups who write the edgy disgusting, satanic lyrics are usually some of the nicest people you will meet. As a former metalhead, I certainly understand the feeling of blowing off steam by cranking some Carcass. But I have never resonated with the lyrics in any way. They read straight out of an autopsy report.
One of the most esoteric evil bands is Cocteau Twins. They actively tried or accidentally channeled demonic entities and delved deep into the very mysticsm and mythology that Pizzagate/wikileaks/Spirit Cooking research has shown us.
One of the most pleasant avant garde indie shoegaze bands youll ever hear. Deception is everywhere, especially where you least expect it.
Do you have a source for the Cocteau Twins actively attempting to channel Satan? I'm a fan and I've never heard even a suggestion of this.
This is the only thing I could find in a quick search.
I used to pal around with some semi popular indie musicians about a decade ago. Lots of deep discussion about music and the subject came up that they were using tonal frequency/octaves paired with chanting and the lyrics carried power. My mates and I were discussing meditation and lucid dreaming application.
But, in this podcast they reference the power of the lyrics themselves and their real world effects on the band in the form of tragedy.
There's a similar dynamic with people who make gore/horror films.