You are an absolute Godsent. These Songs were/are so good imo that I never considered them being AI generated.
And for anyone asking themselves the same question, I scimmed through a few comments it seems like Tateshiko is already trying to put them up on spotify, so there is something to look foward to.
Now I can finally listen to these songs without having the game open... not that I mind watching these beautiful scenes tho ( ͡° ͜ʖ ͡°)