I thought the soundtrack was instantly forgettable, but more than that, I thought thematically it was contrary to the tone the game was trying to set.
They're supposed to be on the run, hunted by everyone, unsure what they're supposed to do or how to do it and for half the game (story wise) at odds with each other. But the music is devoid of any tension or urgency and downright bucolic at times.
To me, it's just another example of what I felt of the game as a whole. Lots of things that are interesting as separate elements but unable to come together to form a cohesive finished product. On the other hand, it was nowhere as tedious as Lost Odyssey, so there's that.