#Westminster Abbey (Building) #London (City/Town/Village) #Christmas Carol (Composition Type) #Christmas (Holiday Period) #Christmas Eve (Holiday) #Christmas Music (Musical Genre) #Adeste Fideles (Composition) #O Come All Ye Faithful #Westminster Abbey Choir #Eucharist #Anglican #Organ (Musical Instrument) #United Kingdom (Country) #Great Britain (Island) #British People (Ethnicity) #England (Country) #Choral #Choir #Carol #Carols