Tradsinger. Correct, but that's because the traditional musics of Ireland, Scotland and England have been influencing each other for centuries. I'm tempted to say something about good neighbours but I'd better not. I could though mention migrations between these three countries. Also, the fact that tune books had a common circulation, so that something printed in London would almost certainly be reprinted in (say) Edinburgh and Dublin.

Tangledwood. I'm not trying to define anything. In fact the point of my argument is that Celtic music is undefinable because it doesn't exist. Also, that there is no Celtic people which has a unique style of music. As with the rest of Europe, the musics of the Celtic regions have been influenced and overtrodden by neighbours, marauders and conquesters (if there is such a word) down through the ages to the point where it is impossible to talk about ethnically unique styles of music.