Answer:
One more than a duet.
What always comes into the house through the keyhole?
They come to witness the night without being called, a sailor's guide and a poet's tears. They are lost to the sight each day without the hand of a thief.
It is something you will never see again.
What is born on the ground but floats to the sky, to be returned back again from the clouds up high?
When is it bad luck to see a black cat?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?