I've been having the same experience lately, listening to all sorts of music from games I played when I was still in my most formative years. The Wild Arms and Lunar soundtracks hit me sometimes, as do most of my favorite tracks from every Final Fantasy. The PS1 era in particular brings me so much nostalgia, it's unreal. Chrono Cross, Star Ocean, Suikoden, Front Mission, Symphony of the Night, Azure Dreams, Legaia, Threads of Fate, all of their soundtracks resonate with me and bring me a powerful sense of familiarity and peace when I hear them as an adult. Thousand Arms gives me a very strange sense of melancholy if I try to replay it, maybe because I loved the characters so much when I first played it. I can't remember a lot about my early life outside of video games anymore because of the dissociation from the events going on in my life, but I can still remember all the names of every character in every RPG, all the events and story beats, all the music, all the time I spent glued to my TV to get away from it all. The same goes for all the games I was playing on other systems around that time, but the PS1 was simply the king for me.

Quote Originally Posted by Lone Wolf Leonhart View Post
The effect of the song changes over the course of the game. Initially it represents the tranquility of the church and its flowers in an otherwise shambled Midgar, but after huge events in the game happen and you find yourself coming back to the church, it reminds you of your time spent with Aerith.
I love when things like this happen in games. The church doesn't really change, the flowers don't really change, the music doesn't change. The only thing that changes is your experience, and it presents everything in a new light, perhaps giving you a new appreciation for the things it represents, or for the times you had there. It makes you stop and take notice of how affected you really are by the story, really driving home the reason you play RPGs in the first place.