One of my favorite soundtracks ever, deserved.
I quite liked the music and even the game of FFXV, though not my favorite by far. The best track in FFXV, though unused I think, was Prelude - World of Wonder. I am not sure if that is her credit or not, but regardless, the games OST was quite good.
Indeed, it was only used for the trailer "world of wonder" and never in the game, a real shame. It's quite reflective of FF XV as a whole sadly though, so much lore and content, but vastly underused.
I actually made a music video using this particular music, and showcasing out of bounds / unused environments, to really put to light the hidden beauties of the game.
Final Fantasy XV is both a game that I love and a game that I find really frustrating, because of its wasted potential. I'll forever be attached to the project though, it's just part of me lol.