Liking the story so far. Love how down to earth the story is. Getting transported in another world not as a saint and only with bear minimum magic. I hope it will not follow stereotypes, like in the end she is a goddess or something. I hope it is just something like being spirited away since the two world has kind of wormhole.
Composing is something solitary. He should be okay to do it remotely. On occasion he needs to go seoul maybe to meet the people who will perform it if that is needed. But it seems like he used templates, forgot the actual term, something like ready made accompaniment. So he would be ok living in the country side.