Celtic Woman

The voice
http://www.youtube.com/watch?v=sfO6JpR5Ip8
The contradiction
http://www.youtube.com/watch?v=_imLJAjXMiA
Ave María
http://www.youtube.com/watch?v=SsTJU27a1uc
Panis angelicus
http://www.youtube.com/watch?v=q7SieaeK93U
O holy night
http://www.youtube.com/watch?v=sDeXUvWbLp8