Hoggy Warty Hogwarts

The Hogwarts Alma Mater, or school song, is, at times, performed by students before the beginning of the first term of a new school year. It appears as though the Headmaster casts a spell, allowing the proper words to come from students' mouths to whatever tune they choose to sing it to.

Lyrics
''Hogwarts, Hogwarts, Hoggy Warty Hogwarts, Teach us something please, Whether we be old and bald, Or young with scabby knees, Our heads could do with filling, With some interesting stuff, For now they're bare and full of air, Dead flies and bits of fluff, So teach us things worth knowing, Bring back what we've forgot, Just do your best, we'll do the rest, And learn until our brains all rot.''

Behind the Scenes

 * In Harry Potter and the Order of the Phoenix (film), Hermione Granger and other students enter the Forbidden Forest for a Care of Magical Creatures class with Professor Grubbly-Plank. They are singing the school song on their way into the forest.