Imagine you've just moved into an old, sprawling mansion rumored to be haunted. On your first night, you hear soft, haunting echoes of a lullaby. Who is singing? Why? Where is it coming from? Is it really a ghost or is someone trying to play tricks with you? Write a short story exploring these questions using descriptive language to create an eerie, suspenseful atmosphere. Remember to incorporate all five senses to make your setting and characters come alive.