Look Outside's OST was surprisingly fantastic. The start of the game has some decent ambient tracks and synth-sounding stuff for calm/safe areas, but I didn't expect some of the more important boss fights to go nuts with it.

https://www.youtube.com/watch?v=rTM6BQ1XlXc

https://www.youtube.com/watch?v=hoTV0pY1I4A

https://www.youtube.com/watch?v=tC5SmaZNpBc