Sleep, Little Child

Everytime my son hears this song, he will fall asleep:

Sleep, little child, go to sleep,
Mummy is here by your bed.
Sleep, little child, go to sleep,
Rest on the pillow your head.

The world is silent and still,
The moon shines bright on the hill,
Then creeps past the windowsill.

Sleep, little child, go to sleep.
Oh sleep, go to sleep.