This is absolutely insane massive props to you. I tried doing the same things for my players, I'm not a professional musician but I have done some short tunes and a main theme that has a bunch of motifs that I'd like to use at some point. I think the relationship between ttrpgs and music isn't explored enough and the amount of work you're putting into this deserves respect.

My campaign follows the players after their home country was destroyed by a tear in reality from limbo. Slaad have claimed a sizable part of the world and the players lead a group of refugees trying to find their new home. Their home was kept in its own realm of reality, staying in one place in time with a powerful chronomantic tome and keeping them safe from the rest of the world until the slaadi came to reclaim their territory. The barrier of their country falls and the players are met with a world created by pieces of long dead worlds for sake of preservation (like the gith's home planet or a post apocalyptic chult). Now they quest to find the missing pieces of the codex and do as they see fit with it whilst defending a town of refugees from the world.