Please read Part 2 of this introduction I wrote for new Kodi users, targeting QQ NUC buyers, the Optional Categories Feature is discussed near the end :
https://www.quadraphonicquad.com/fo...cial-edition-media-players.37171/#post-835869
I implemented Categories by grouping albums by ‘Music Source’ naming as ‘Category Sub-folders’, no tagging required or involved. It’s purely a folder structure, and governed by where your album is located in the folder structure.
In my implementation a release should only have one Category (one copy ) This version is ‘Quad’, this one is ‘Atmos’ etc. If using Categories, a BDA with both Quad and Atmos mixes would have the Quad stream in one Album folder and the Atmos stream in another album folder. You can easily find either or both in the Kodi UI, you do not navigate by folders, You filter by a category my selecting from a simple menu node.
Categories and Genres are independent. You can use both, either or none at all. How can you use them to allow you to group and find albums of interest to you.
Genre is implemented in Kodi by the value of the ‘Genre’ tag, like every other music app I know that uses tags.
Genres are not restricted to certain values, users can have any ‘genre’ want, there no rules, or the rules are ones you define:
https://en.wikipedia.org/wiki/Music_genre
The Kodi Remote smartphone app video, I posted earlier in this thread, shows clearly a user finding music by selecting by Genre. This shows the Remote UI not the Kodi UI, but the functionality is identical in concept in Kodi’s UI: ‘Show only my Jazz albums’ shows every album that has the word ‘Jazz’ in its genre tag.
Do what you want with it, it’s optional. Don’t use it at all, use it later. It’s your choice, now, later, never.