Hi Granduck. Good job on the music pages. I've always wanted music info on the wiki and you've covered exactly what I want covered.
I have a few minor style-related things to bring up.
- Reference links don't need to be in square brackets. People should be able to see what the referenced site is without visiting it or hovering over the link.
- For serial code rewards, they can go in its own section
- For character songs, there can be a link on the page to its official page on https://song.granbluefantasy.jp/ You can decide where to put it.
You can check the Sora no Michishirube to see what I mean.