It's not quite on-topic, but I was a little surprised that the article didn't mention that Christopher Lee recorded two metal albums about King Charlemagne: https://en.wikipedia.org/wiki/Charlemagne:_By_the_Sword_and_... and https://en.wikipedia.org/wiki/Charlemagne:_The_Omens_of_Deat... . He has a great voice for narrating a metal album, even though he recorded them when he was 80-something years old.