How rewarding to have the audience sing your song with you. It proves how music can be meaningful and accessable to everyone and I have been trying to sing and play it too for myself. It's a lovely song, true to the human spirit.
WanTing, Hong Kong just learnt of your existence, and we couldn't get enough of you, and no matter how good these RU-vid videos are, none of them could ease our yearning of your presence. I WILL buy tickets to go see you, I WILL make any impossible day-off happen just to be there! Please come and meet your fans in Hong Kong!
This must've been such an experience. And the audience knows every single word! This is just, amazing. I really like how @reggieobster said it that when there is no distance between audience and singer, the hearts and minds of the people connect (she/he used the word "crash") and thus cry in the exhilaration of the moment. It's really rare to have such a big star be so personal.
If you read her notes on the video, this was actually the second time she sang it at the concert. A lot of people were asking for an encore for that particular song. She prolly asked them to sing while she played.