Okay, I know I'm only on chapter 3 and I'm currently writing chapter 4, but before, when I was planning the characters, the plot and everything, I suddenly thought of creating an OST for the characters and possibly even an official one for the whole story.

When I meant 'creating', I meant actually making one, an original. And yes, I haven't introduced other characters yet but I think I have an idea for a 'couple' soon to be introduced in the story. I didn't make it but it's a cover of a song that already exist.

Should I or should I not?