Instruct: Classify Amazon reviews into positive or negative sentiment
Query: HORRIBLE sound editing

This seems to have been a problem others have experienced. Even on Netflix this series is unwatchable: The "background music" is significantly louder than the narrator, making it near impossible to decipher more than 25% of what he's saying. If you enjoy documentaries, you know how important narration is. This wouldn't be the end of the world if there were subtitles/closed captioning. Though it is advertised to include that, THIS SERIES IS NOT CLOSED CAPTIONED. It's really a shame to see something that could be great be completely unwatchable due to extremely poor sound editing, as if the producers of this series never even actually watched their own final product.