Crossword Genius

In arrangement, a Wagnerian may offer a seasonal song (4,2,1,6)

Ross

I believe the answer is:

away in a manger

I'm a little stuck... Click here to teach me more about this clue!

'song' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for away in a manger that I've seen before include "Familiar tune" , "song?" , "Christmas carol" .)

I've seen this clue in The Everyman puzzle in The Observer.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.