The quote 'You’re a wizard, Harry' launched a decade of cinematic magic. To introduce the wizarding world, John Williams chose the celesta for the opening of 'Hedwig’s Theme.' The celesta is a keyboard instrument that looks like a small upright piano but strikes metal plates instead of strings, producing a 'twinkling,' bell-like sound. Williams used it to create an atmosphere of mystery and wonder. The instrument's sound is often associated with the 'music box' quality of childhood, which perfectly complemented the story of an orphan discovering his heritage. The celesta’s delicate notes have become so iconic that they are now the universal sonic symbol for the 'Harry Potter' franchise. This instrument proved that even in a world of high-octane spells, a simple, gentle bell-like tone could be the most powerful way to welcome an audience into a legendary story.