You need to listen to the sound with this video.
It was Disability Awareness day and the folks at Fenway did a lot of great things for kids with challenges..here is one who sang and when he got nervous the Fenway Faithful helped him out
http://www.youtube.com/watch?v=NhcZRFcjbhw
A friend sent that to me yesterday and it really choked me up. People can really surprise you sometimes!