A girl's name on a choir's lips at Christmas (5)
I believe the answer is:
carol
'a girl's' is the definition.
(woman's name)
'name on a choir's lips at christmas' is the wordplay.
I cannot really see how this works, but
'name' could be 'caro' and 'caro' is found in the answer.
A single letter 'l' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for carol that I've seen before include "and 27: Waits" , "Girl's name; sing" , "See 1" , "Girl" , "Song celebrating the birth of Jesus" .)