I'm listening to Celtic Woman on YT - first time I've ever heard her but I am LOVING her vocals! A stirring song can make the blood go hot, no?
She sorta reminds me of Annie Haslam of Renaissance...I remember listening to them growing up as they were a favorite of my Mom's...her vocal range was nigh unmatched among her contemporaries, ethereal and soul stirring. Hard to find their stuff on YT because a lot of their songs were REALLY long...Scheherzzade, for example, had a running time just short of 30 minutes!
Here's an excerpt - a medley of 'Song of Scheherazade (only the Prince and Princess portion) and Ocean Gypsy and even this is not their best recording.
[youtube]http://www.youtube.com/watch?v=p4FYFRloxAI[/youtube]