http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Angels we have heard on high -- O come, O come Emmanuel -- Carol of the bells -- The Christmas song (chestnuts roasting on an open fire) -- O holy night -- This Christmas -- Little drummer boy -- Go tell it on the mountain.
Pentatonix (Avi Kaplan, Kevin Olusola, Kirstie Maldonado, Mitch Grassi, Scott Hoying).