Who saw that coming? Absolutely amazing, I got goosebumps watching that and the song choice was just perfect for the story they were telling. I'm interested to see what they will do in the live shows
If you search the web, you can find more videos of them. They've already been on other talent shows (e.g. the German version of BGT "Das Supertalent") and (according to a video title) in the London Olympics opening ceremony as well.
Definitely the best act of the night. I watched America's Got Talent last year and there was a similar act but with more performers and they were amazing too.
Thought their performance was stunning and very original. However, IMO their biggest obstacle is that they are not a UK based act. Not a problem for me but reckon there are a lot of voters out there that will not vote for a 'foreign' act to win.