To quote Guest Sam...."Even a missed note or the unperfection of a live sound is what makes it a real experence.".....Maybe they are just really good, they have been together for 2 years and have practiced these songs how many thousands of times ???   And Guest Cathiasis, to say the woman of Celtic Woman have no class based on your unfounded and ridiculous (IMO) suspicions is simply ludicrous. They carry themselves with more class and integrity than most performers in music today. Have a good day.