This is the youtube link for all those who aren't on twitter.
As an aside I thought as LWS know theyare limited by size of speakers they can bring, that in the past the suggestion was (assuming you have such a phone) is to use your mobile to listen but still watch.
I haven't had time to re-listen as apart from wind unfortunatley had 2 phone calls that interrupted my watching.
But thought the young women were brilliant and moving.