Do you know the storyline behind your favorite concept album(s)?

Let's talk about it?

I will start with one of my current favorites:

DREDG - El Cielo

This album is inspired by and connected around two main themes: 1) Sleep Paralysis, a phenomenon characterized by the "temporary paralysis of the body shortly after waking up or, less often, shortly before falling asleep"; 2) a painting by Salvador Dali entitled "Dream Caused by the Flight of a Bee Around a Pomegranate a Second Before Awakening". A great and very atmospheric album, by the way.