Sorry guest, although the singer has a beautiful voice, I find all the Celtic Woman stuff to heavily produced for my taste.
I grew up with Gaelic music and song, and the best, most exciting versions are the unaccompanied ones. Have you ever hear "Sean Nos" the old style .It will take your breath away and they never need props or gimmicks http://www.youtube.com/watch?v=sfO6JpR5Ip8