Oh Gheesh,
I remember that one. Only heard it once about John Denver getting his ability from Satan and asking JW's to leave. But I heard many times about his asking if there were any JW's in the audience and then asking them to leave. Also heard a lot about Blue Oyster Cult and Led Zeppelin being inspired by demons. Oh.....and how about the one big Beatles album from 1965....Sgt. Peppers Lonely Heart Club Band? There was one person on the cover (can't remember his name right now) I think it was Alastair something. He supposedly helped channel the Beatles to the spirit world for their inspiration.
HappyDad