Delete Genres

I don't want to necropost so I opened this new.

I have a new installation of LMS. At the top of the genre list I see "A capella" and "A Capella". The latter is empty and I don't remember tagging anything with this genre. Could it be that this genre is included in a initial install? If so, is it possible to remove this?

Thanks

oh, and yes I did a clean and rescan, before posting this.