In the song Nine Blades, there are clicks / errors in the music at approximately 3 locations at 1 minute 8 seconds, 1 minute 10 seconds, and 1 minute 12 seconds.
The first is subtle but noticeable on headphones, during the sustained 'eeeeeee' male vocal
The second is a very evident distortion during the descending male vocal
The third is a distorted click just before the commencement of the brass instruments.
I fiddled with fixing these to sound out with a friend, to confirm I was not nit picking, and uploaded a youtube video as I didn't know how else to convey the error fixes --- it is a crude correction but just bringing this to your attention! The errors are present in-game, on spotify, in the original OST via steam digital edition.