when a reindeer knocks

*When the moon shines high and the elves have turned in for the night, there is a particular knock that pierces the air like a magic call. And every time, no matter how deep in slumber one may be, the answer is always the same: 'Who is it?' And the answer is always the same as well: 'It is I, the reindeer, come to ask if you would like to ride. For the time is here, and we must leave, so come and join me on this Christmas Eve.'*