Hi!
Just a heads up that we now have both URL relationships and (in beta only) other kinds of relationships for genres, such as finnish tango - Genre information - MusicBrainz
I’ve gone through genres setting rateyourmusic and wikidata URLs and areas, but I’m sure I missed some - if you see some I’ve missed, do let me know. Also, do feel free to suggest other relationships that might make sense (allmusic / discogs genre pages?). genre-genre links (like subgenres) can’t be added yet, although @Bitmap is working on code that should eventually make that possible. And keep in mind to actually just assign a genre, there’s no need to use a relationship, we just use tags 