THAT WAS THE ONE!! 
Last year, I was over at a friend's house, she put this Christmas collection CD on the stereo (the kind with current popstars dragging out the Dickens) and that was fine, but then she went into the kitchen to make some drinks, and this piece came on...maybe she was talking, but all I could hear was this unbelieveable rendition of
Ave Maria...
She comes back out, hands me my drink and says "Todd, you're crying!"
So we listened to it again...I was so addled, I forgot to find out who it was...Celine Dion, you say?
Shoot, and I used to like making fun of her!