Hymns for the Christmas Eve masses are on the Weekly Music page. I was also asked to play an ‘Organ Carol Service’ at 11pm before the 11:30pm Mass. There were no readings or singing, so I just played through a list of carols.  Apart from forgetting what key I should be in for the first verse of “while shepherds watched”, all went pretty well and my timings worked out almost precisely, so I finished on the dot of 11:30pm.  Shortly afterwards, the priest rang the bell and I launched into Come to the Manger for the procession to the crib.
The complete list of carols was:

Gaudate
Infant Holy
What shall we give
What Child is this
Unto us is born a son
It came upon the midnight clear
While shepherds watched their flocks by night
Once in Royal David’s City
Hark the herald angels sing
Away in a manger
O Little Town of Bethlehem
O come all ye faithful
Silent night