One of the best videos I've seen in awhile! If I had been there that day I would have stood up and joined in on the singing - have to give it a standing ovation, too! It was excellent enough on it's first public appearance before King George the II - that he stood to his feet with a standing ovation - it's even better now - sung all across the world via the internet.
In case you are not aware of the story of Handel's "Messiah" I am including a link with some history of this extraordinary song and the setting in which it occurred.
Check these links out for more info:
Here the words are written so you can sing/follow along: http://www.youtube.com/watch?v=xdRyNea19PE&feature=related
Here a very clear, crisp rendition with wonderful orchestra and vibrant chorus: http://www.youtube.com/watch?v=76RrdwElnTU&feature=related
A resounding version featuring several 16th-note (semiquaver) melismas referred to in the Wikipedia article: http://www.youtube.com/watch?v=__gnmuzq6HI&feature=related
Hope you enjoy the music . . . I know it's Thanksgiving in a couple days . . . just getting a jump on getting into the holiday festivities now for the next month!
"You will have a song, as in the night when a holy feast is kept; and gladness of heart, as when one goes with a flute to come to Yahweh's mountain, to Israel's Rock."