It would disappear for many hours, when the air in the roughly shaped room warmed a little, leaving him to toss uneasily on the flinty floor.
Then again it would return with sweet musical mockery when the gloom had grown cool.
He thought only of his impertinent apparition as "It".
Although unerringly girlish in bodily proportion, it was anything but knowable.
Do you like lullabies? She taught me one, or two...