I'm surprised at some of the judges choices before the live audience section. They chucked out some good singers and picked ones that didn't perform too well. Often in the same section!
The confident girl who sang the Megan Tranior song, was clearly going to come unstuck, even though she was a decent singer. The audience went quite as a mouse after her performance. Even if she had go through the viewing public would have not liked her attitude and she would have got a lot of bad press from being on the show. I don't think she will have an easy ride (following that) from the public.
There was one group of singers with an older guy. We never saw him perform, although all the rest were featured. And we saw him looking gobsmacked as the other three got through. But presumably he didn't, as he was never seen again.
There's an awful lot of footage from that round that went on the cutting room floor. They did give us a clue as some of the contestant were shown doing the auditions at lighting speed. Don't know what the point of doing that is for though