If you are happy, you can sing Jingle Bells.
Edelweiss is also suitable.
If you are atmospheric, you can sing the Madonna.
If you are not a professional, you can sing in c key.
It is also possible to have a lasting friendship.
The most suitable place is Christmas Eve.
Sing what is popular if you want.
lemon
tree
we
can
exist
hero
If it is too popular, it is really not suitable for singing on Christmas Eve.
But if you have any requirements, you can continue to ask me and try to answer them.
The ode to the Virgin Mary was recommended by me and should meet your requirements.