As Frank was saying, "What do you think is Irish music?" Is it only traditional acoustic folk music played by stereotypical barflies? Is U2 not Irish? Is Enya or Clannad not Irish? Irish music is whatever a person from Ireland plays or sings - be it speed metal or elevator music.

I DO believe Celtic Woman is poorly named. Not because it's inacurate (apart from Westenra, they're all Irish) but because it sets up all this arguing by implying some sort of Gaelic showcase (although they do a great deal of Gaelic numbers, and well). But the equal mix with show tunes and current adult contemporary hits cuts against that expectation. If they were called "Embarrassingly Talented Beautiful Irish Women", this thread wouldn't even exist.