...and yeah I realise contributing to a totally inconsequential year-old argument is a bit dumb, but no-one's going to read this anyway, right?

I mean people tag stuff as "female vocalist" and that's not a genre, it's just some telling characteristic of the music. Sorting these characteristics into tags is what the whole tagging system is for.

You're saying that as if anyone cares, ozjef. They're Last.fm tags, stuff like this is bound to pop up.

Why cant a genre reflect a mood?

this isn't a real genre. Any genre name that reffers to itself as a mood is not a correct one.