My vote is with Andrew's posting. I would add that there is much sniping at Celtic tradition generated by [dare I say it---] jealousy of the impact that Celtic music has had in recent years. I strongly suspect , in some cases, collusion with so-called "researchers" at government level in an effort to douse the Celtic flame which does tend to be strongly nationalistic---in Scotland, Wales and Ireland. Those so-called "experts" have even gone as far as to state that no such genus as "Celt" ever existed. My own name [I'm a Scot] is Scandinavian/Norman, but my Mother's family are from the Hebrides, carrying a Celtic name, and Celtic traditions. Much of Scottish music is not Celtic. The same can be said of Ireland. That does not alter the fact that to deny the existence of Celtic tradition is patently ridiculous.