Weirdest album I've ever seen

I was looking on a shopping site and saw the most unusual album, Pat Boone: In a metal mood. Pat Boone did a metal album, that was just strange, I thought, "nobody would buy that". So after I got it in the mail I listened to it, and it was just so odd. Hearing Pat Boone performing songs like "No More Mr. Nice Guy" "Holy Diver" "Enter Sandman" and "Crazy Train" was unthinkable, it was just the strangest experience.