We all know the devil worshiping cults are actually communicating with demons outside of our 3D dimension by now.

Here's what I think is happening. The demons are being let into this World through certain blood rituals in exchange for technology. They are able to enter certain 3D stuff like willing human subjects or even music. The ones who summon them do so usually in exchange for technology or information.

So one of the things the music industry does is run rituals to get demons into the music they make. Then they broadcast the music and the demon is able to alter the listeners mind in negative ways like making them much angrier or much more anxious.

This is yet another reason to stop listening to TV or radio media.

My source is many pieces of the puzzle for a giant variety of sources including books and insider testimonies.

The demons are just the Biblical "fallen angels" who were tricked into following Lucifer's evil philosophy which ended up driving them into insanity.