It's a dreaded moment for any Christmas caroler -- you've forgotten the words and are forced to mumble along with the other singers until you reach the well-known refrain again.
But thanks to a semi-secret Google Android tool, you won't have to worry about this again.
All you have to do, according to Droid Life, is open Google Now's search, hit the microphone and say, "let's go caroling."
Google will then bring up a list of popular caroling songs. It will not only provide the lyrics for your chosen song but will also play musical accompaniment -- a boon for those who aren't confident enough in their a capella skills.
Let's go caroling. (Image source: Droid Life)
Phandroid put together a video demo of the tool: