On Snape’s other side was an empty seat, which Harry guessed was Professor McGonagall’s. Next to it, and in the very center of the table, sat Professor Dumbledore, the headmaster, his sweeping silver hair and beard shining in the candlelight, his magnificent deep green robes embroidered with many stars and moons. The tips of Dumbledore’s long, thin fingers were together and he was resting his chin upon them, staring up at the ceiling through his half-moon spectacles as though lost in thought. Harry glanced up at the ceiling too. It was enchanted to look like the sky outside, and he had never seen it look this stormy. Black and purple clouds were swirling across it, and as another thunderclap sounded outside, a fork of lightning flashed across it.

“Oh hurry up,” Ron moaned, beside Harry, “I could eat a hippogriff.”

The words were no sooner out of his mouth than the doors of the Great Hall opened and silence fell. Professor McGonagall was leading a long line of first years up to the top of the Hall. If Harry, Ron, and Hermione were wet, it was nothing to how these first years looked. They appeared to have swum across the lake rather than sailed. All of them were shivering with a combination of cold and nerves as they filed along the staff table and came to a halt in a line facing the rest of the school—all of them except the smallest of the lot, a boy with mousy hair, who was wrapped in what Harry recognized as Hagrid’s moleskin overcoat. The coat was so big for him that it looked as though he were draped in a furry black circus tent. His small face protruded from over the collar, looking almost painfully excited. When he had lined up with his terrified-looking peers, he caught Colin Creevey’s eye, gave a double thumbs-up, and mouthed, I fell in the lake! He looked positively delighted about it.

Professor McGonagall now placed a three-legged stool on the ground before the first years and, on top of it, an extremely old, dirty, patched wizard’s hat. The first years stared at it. So did everyone else. For a moment, there was silence. Then a long tear near the brim opened wide like a mouth, and the hat broke into song: