Once Upon a Time in Norway is about Norwegian Black Metal. It’s about Satanist undergrounds, secret brotherhoods, friendship, betrayal, arson, violent death and everything else that makes Norwegian Black Metal the most infamous music genre in the world.
Some birds make sounds that are musical to our ears. Consider the skylark, whose melodious sounds we label as song. So it’s quite natural to wonder whether there is a connection between animal sounds and the music that humans create.