What happened to the Behind the Scenes music?

takemedowntodbdcity

I need to know. It was so good, but it's nowhere to be found. I assume it was just made for the video, but I plead with anyone important who may see this that it be released separately or integrated into the game.

please :(

(intense part starts at 5:06)

https://www.youtube.com/watch?v=YVDeOR9-N_4