These are magical pieces like you hear in a children movies. Music is based on a Christmas mood. It has got a happy melody, a lot of bell sounds.
Joy to the World-1:05(start at 1:17 in preview) http://audiojungle.net/item/joy-to-the-world/9725873
O Tannenbaum- 1:27(start at 2:23 in preview) http://audiojungle.net/item/o-tannenbaum/9735950