i think the voice is great, so i'd have to disagree w/ the naysayers... BUT, i think what really gets us is that she sounds nothing like she looks. i still wonder if that's her real voice! its like the little mermaid voice... the real person is quite a shock. that's what this craze is all about, in my opinion.
i'm not an expert either but i was made to be in choir enough during grade school and middle school to know that she's better than most.