"So you reckon James Galway's style is valid? On whose terms?"

I agree with Dick here. It is different, but it comes within a tradition, that of Ulster (which may not be politically as acceptable) but I have heard other whistle and flute players from there who have a similar style, it's tongued more than in the south but is that not a valid way of playing? Likewise a fiddle player from Antrim has a different style.

All the best

Steve Ogden