Well, speaking as one who recently gave a presentation on the music of Cumbria to the students on the course - as part of a module on The Music of the North East and Borders (stretching a point, including Cumbria I suppose, but the north of the county has always been 'the debateable land'- sometimes Scottish, sometimes not.

Many of these students eagerly took away the photocopies I brought of manuscript fiddle tunebooks from Cumbria, so I guess they'll be playing some of them. But actually many of those tunes are versions of Irish and Scottish tunes - or are the Irish and Scottish tunes variants of English versions? Who knows? They were all mixed up in the 18th and 19th centuries, so they've no racial purity ... much as WAV might want such a thing.

What a nonsense to imagine that the English, Irish and Scottish traditions are discrete entities! It's never historically been so, so why should it be now?