Since you are interested in Puer Natus Est: Tudor Music for Advent & Christmas, here is a list of other items that you may find interesting.
DAQUIN / ZIPOLI / BACH / BALBASTRE
Noëls à l'orgue: Organ Music for Christmas
René Saorgin (organs of Tende and Chambéry)
[ Harmonia Mundi Musique d'abord / CD - released 20/Nov/2014 ]
Jingle Bells! With René Saorgin at the historic organs of Tende and Chambéry, discover the delightful noëls of Balbastre and a whole collection of pastoral pieces for organ - not to mention the chimes of Chambéry.