I'm sure the artist tells the producer whatever they want to get the directors and producers do what they want.
I doubt if they say...well see, there's this chick in ohio, and me and my lost boy rockstar vampire friends, who are ushering in the kingdom of christ in the last days...
Though the producer might say hey that's a cool idea for a vid!
A lot of music and videos about this were made before it ever happened. Somehow they've known for a long time, or at least some have. I think they dream it. I don't know. And no, I didn't listen to any of those bands prior to it happening except a few songs on the radio.