I just recently discovered the full score/soundtrack on Spotify and added the songs to my Ghostbusters play list in the lead up to FE.
Mark Rutherford, the composer, should receive high praise for capturing the spirit (hehe) of Elmer Bernstein’s score.
It blends seamlessly in with the '84 score.
It’s truly amazing, and all props go to the love this game got shown.
It’s SO good, the perfect blend of creepy and whimsical just like the movie score. I almost forget sometimes that it’s NOT taken straight from the films, especially when the action ramps up.
Also I had no idea it was on Spotify 
New study music unlocked!
I didn’t either until recently.
I have my playlist on random ait it jumps from the movie score to the game score and it blends so it takes a minute to realise.
The soundtrack and the ghost animations are two of my favorite things in this game, hands down.