I definitely picked up the Persona vibes from the music! It's catchy and sounds nicely polished to me, and the change in instrumentation from the title screen to the gameplay is really fun (and got my head bopping for sure). Awesome job!
I did the music and sound effects for our game (https://itch.io/jam/tgcxcoreblazer/rate/3568135) and ended up with seven tracks! There are a few hiccups with implementation at the moment (certain tracks meant to only play through once, music not kept continuously through rooms, and a dynamic layer missing in one of the later rooms), but we're planning to patch those after the voting period.
In terms of process, I tend to jump back and forth between different approaches, but for this jam I mainly started with piano sketches in notation software and fleshed them out in my DAW afterward. The piano ended up sticking as the main instrument since I felt that it fit well—we had a kind of "mysterious (sometimes unsettling or foreboding) but beautiful" theme going on that I wanted to match with the audio, sometimes sliding closer toward one side or the other. I especially wanted the first room's music to be more free-flowing, so the majority of it is from a snippet of a piano improvisation recording I had on my phone! The hallway music was loosely inspired by the first area in Gris, where the delay effect on the piano creates its own kind of melody, and a couple of the sound effects were also inspired by Spiritfarer! I'd love to hear any feedback on the sound or game itself :)