Brittany with New Directions:
Have yourself a merry little Christmas
Let your heart be light
From now all our troubles will be
Out of sight

Puck:
Have yourself a merry little Christmas
Make the yule-tide [bad word] 
Jake:
From now on our
Troubles will be miles away

Jake and Puck:
Here we are as in olden days
Happy golden days of yore

Sam and Brittany:
Faithful friends who are dear to us
Gather near to us

Sam:
Once more (Brittany: Once more)
Once more

Blaine:
Through the years we all will be together
If the Fates allow

Kurt and Blaine:
Hang a shining star upon the highest bough
And have yourself a merry little Christmas now

Puck:
Faithful friends who are dear to us
Gather near to us once more

Blaine with New Directions:
Through the years we all will be together
If the fates allow
Hang a shining star upon the highest bough

Brittany and Sam with New Directions:
And have yourself a merry little Christmas now, ooh yeah, oh, ooh