"...but Miss Hermione Granger knew my secret ambition is to rid the world of evil and market my own range of hair-care potions -- good girl! In fact" -- he flipped her paper over -- "full marks! Where is Miss Hermione Granger?"
The Leaky Cauldron is not associated with J.K. Rowling, Warner Bros., or any of the individuals or companies associated with producing and publishing Harry Potter books and films.
"The Leaky Song" by Brad Mehlenbacher of Draco and the Malfoys