Yeah, it's something special isn't it? There's another couple of performances from the same show, which looks like some kind of special "Star Factory".
The first is the old Edith Piaf song " Non je ne regrette rien" sung in beautiful French.
http://www.youtube.com/watch?v=xJfENA_yhmI
The second is a duet with someone I don't know, but I'm sure someone on here does
I think the first comment sums it up.
http://www.youtube.com/watch?v=3jZZX5EUTfk