"U.F.D.E.M." by the Occult Rock band Jacula from their fantasticly spooky 1972 album "Tardo Pede in Magiam". Personally, this is one of my all time favorite songs... I love how creepy the atmosphere is with the church organ and singing. I also find the verses to be catchy as hell. If there's enough response to this video, I'll upload the rest of the album. It's the ultimate Halloween album.