My boyfriend and I were at the Woodlands Pavillion right at the back on the lawn watching Lionel Richie when we noticed a light coming from the left of the stage. At first I thought it was a plane but it was moving far too quickly. As it streaked past us still to our left, within a few seconds, we could see it was a weird blue-green colour. Suddenly it split into two before disintegrating into nothing.Neither my boyfriend nor I knew what we'd seen, but as we looked at other people In the crowd standing by us to see if they'd also observed what we had, they all confirmed they'd seen the same thing and had no idea what it was. It definitely wasn't a plane's lights that's for sure.Even more interesting was that about an hour before that, I pointed out a sole black helicopter flying over to our right in the direction of the stage. It wasn't a hospital helicopter and looked more like an army one only this was black. As far as I'm aware there aren't any army bases that close to Houston so I wasn't sure why a helicopter like this would be flying so low and close to where we were. When we saw the weird lights it just made me even more curious.