The score was performed by a 102-piece of the London Session Orchestra at AIR Lyndhurst Studios and Abbey Road Studios in London with orchestrations provided by Williams, Alexander Courage, Conrad Pope, John Neufeld, Eddie Karam, Pete Anthony, Benjamin Wallfisch and Larry Rench.

[4] Often labelled as the series's main theme, it first appeared in Harry Potter and the Philosopher's Stone in the track "Prologue".

"Hedwig's Theme" has achieved significant pop culture status, being featured as ring tones, trailer music, and other forms of multimedia.

"[5] Kirk Honeycutt of The Hollywood Reporter deemed the score "a great clanging, banging music box that simply will not shut up.

18 is also included in the epilogue of Harry Potter and the Deathly Hallows – Part 2 as a tribute to Williams and the series' end.