Was Jackie Evancho’s performance on “America’s Got Talent” a fake?

Last night I thought it was phenomenal, but when I woke up this morning I began questioning wheter it was even possible for a 10 year old to sing like that. Then I got online this afternoon and read that many people think the producers staged the whole thing. They pointed out that it appeared she was lip- syncing to a pre-recorded track, and that the vocals seemed almost too good for even the most talented 10 year old. Do you think the show’s producers staged the whole thing to manufacture a ” Susan Boyle Moment” for America’s version of the show?

Here is a link to the performance if you have not seen it yet.