Irish Dancing Homeschoolers on NBC

There is a show on NBC called America's Got Talent. It's a contest where the audience votes for the winner and the finals are Wedensday at 8/7 central. And one of the finalist groups are friends of my cousins; they will be performing Irish Dancing, to see a video go here. They're in round 4, look for Celtic Spring.
I'm looking forward to watching it.
Update: Here is another longer video of them including what the judges thought of their performance, it's very interesting. They're an awesome family.