I love Halloween. It's my favorite holiday. And there's a ton of great rock and pop music that really fits well with Halloween. Here's one of my favorites. It's an old one but it holds up well.
It's a religious holiday. All Hallows Eve, November 1 before All Saints Day. They dressed up as the saints on Halloween and murdered Pagans and Jews. Not my favorite ”holiday”. I hate all religion. I like J Geils tho.
Just like Easter and Christmas, Halloween has mixed origins that are a combination of several holidays and festivals from different cultures. Parts of Halloween originated from the Celtic pagan festival of Samhain.
And just because something had ancient origins in religion does not mean it currently has anything to do with religion. Personally, I believe you make a holiday what you want it to be. No one owns a holiday or makes the rules for a holiday.
@Charles1971 I like J Geils