Her name is Ji Min Jia and she was 5th place in the "super girls singing contest". I think she has an awesome voice, granted her English pronunciation isn't the greatest, nevertheless despite her faulty pronunciation it is still pretty obvious that she has a beautiful voice especially since she sings most of the songs acapella.
She performs:
The Power Of Love - Celine Dion
I Will Always Love You - Whitney Houston
When You Believe - Mariah Carey + Whitney Houston
2 Chinese songs