This one is a bit tougher than the Masquerade. Before the concert started, the organizers made it clear that this was a complimentary concert, there would be no flash photography or videotaping angela. Furthermore, during the concert itself, the AExpo staff crouched around telling people to turn off their vid/digi cams (hehe, my friend got told off). Regardless, there were still rude people who took photos (with flashes on, no less), so there might be a small chance that someone out there has a copy of the video. But it's highly unlikely.
There was one person videotaping the concert from the sides, but I think that she was with the angela crew and was probably taping it for promotional dvds or such. Good luck finding a copy of that.
edit: your topic title bears a striking resemblance to mine