That actually similar to the current system (with 'meta-genres'), but it isn't what's being proposed. The sub-genres will exist independently of the genres, and can overlap two or more genres. For example,Operalala wrote:"Stage Works" is a super-category containing other categories, not the works themselves. The works are categorized "Opera", "Ballet" etc, which categories are then grouped under "Stage Works". Mixing all these works together in the super-category is not standard practice, and not helpful for users.
* Tchaikovsky's suites for orchestra will be listed both in the "Orchestral" genre, and in the "Suites" sub-genre
* Rachmaninoff's suites for piano will be listed both in the "Keyboard" genre, and in the "Suites" sub-genre
So:
* The "Orchestral" genre will include all Tchaikovsky's suites
* The "Keyboard" genre will include all Rachmaninoff's suites
* The "Suites" sub-genre will include all Tchaikovsky's suites and all Rachmaninoff's suites
There will be no super-categories, or anything like that.