I finished NieR: Automata earlier today. It was a great game, but what stole my heart was the music. Holy crap, it’s so good!
The game devs made the unusual choice to produce the background music with heavy use of vocals. I wouldn’t have expected it to work so well, but it does. The words sung are gibberish that is meant to demonstrate the drift of language over thousands of years.
Here are some of my favorite pieces: