Hmmm...odd, that. I would argue that "English music" could be defined as ANY music either composed or performed by someone FROM ENGLAND. I know that doesn't fit your extremely narrow definition, but hey, you're also the one asking us to "define our subject matter". If you want to impose your narrow views on a specific genre, be my guest, but "English" and "music" are both pretty broad terms.
And I find it quite funny that you complain of no one reading "what's written" but in the very next paragraph, you misinterpret my words. I was referring to Kate Rusby as a "damn folk musician", not yourself. As for "what is folk", I'm certainly not going to get into that here. There's quite enough mudslinging and histrionics on this thread to be going on with as it is, I think. *grin*.
As to your statement that Kate is "singing a shit song in her native Barnsley accent...it's hard to know why", oh, I don't know, maybe it's because she LIKES THE SONG. I tend to perform and record songs I personally enjoy performing and recording, rather than subjecting them to a long list of "does this hold up under the weight of every narrow-minded musical zealot that's likely to listen to it?" regulations.
(who realizes this thread is karmic payback for her past declamations of "Celtic Woman Is Eeeeeeeeevil!!!" *big grin*)