"Mater Bells" is a song, sung by Mater in the Disneyland Resort 2012 Christmas TV Spot.
Sleigh bells ring. Are you listening?
In the lane, snow is glistening!
A beautiful sight. We're happy tonight,
Towing in a winter wonderland.
Towing in a winter wonderland!
- The title is a pun on "Jingle Bells". The song is actually"Winter Wonderland", but with "walking" replaced by "towing."