Music of Howl's Moving Castle

The music to Studio Ghibli's 2004 Japanese animated fantasy film Howl's Moving Castle (ハウルの動く城) directed by Hayao Miyazaki, featured a score composed by Joe Hisaishi, Miyazaki's regular collaborator and performed by the New Japan Philharmonic orchestra. Hisaishi had introduced several leitfmotifs for the first time, as his previous scores for the Miyazaki and Ghibli ventures did not have leitmotifs. But, the leitmotifs written for the film, led him space for experimenting the themes, and is different from that of Hollywood film music where "the leitmotif appears very clearly and is very easy to remember". His approach to the score was "a kind of international feel" where he could use sophisticated orchestration to reflect the dense orchestral styles associated in Hollywood films.

The image album to the film's music was released on January 2004, months ahead of the film's release and the score album was unveiled in conjunction with the film. A CD single of the film's theme, preceded the film's soundtrack. In 2020, the soundtracks of Howl's Moving Castle along with Spirited Away (2001), both were issued on vinyl LP, followed by a second re-issue along with the collection of Studio Ghibli soundtracks in 2023.

Howl's Moving Castle: Symphony Suite
Howl's Moving Castle: Symphony Suite is the image album to the film, that was released on 21 January 2004, several months ahead of the film's release. The album featured 10 instrumental pieces from the score, that had been re-arranged and orchestrated to include in the soundtrack. Those pieces were performed by the Czech Philharmonic that was conducted by Hisaishi and directed by Mario Klemens. Each pieces are titled on the elements and the characters from the film.

Howl's Moving Castle CD Maxi-Single
Howl's Moving Castle CD Maxi-Single is the extended play released in CD on 27 October 2004. It featured the film's theme song, "The Promise of the World" (世界の約束,) performed by Chieko Baisho, who played Sophie in the Japanese version, and had lyrics written by Shuntarō Tanikawa and music by Youmi Kimura, with arrangements by Joe Hisaishi. It also featured a karaoke version of the song, and piano version of the film's main theme "Merry-Go-Round of Life" (人生のメリーゴーランド).

Howl's Moving Castle Original Soundtrack
Howl's Moving Castle Original Soundtrack is the soundtrack to the film published by Studio Ghibli Records and Tokuma Japan Communications, which released the album on 19 November 2004. It featured selections from Hisaishi's score performed by New Japan Philharmonic and the film's theme song "The Promise of the World" as the concluding track from the film.

FYC release
A For Your Consideration album featuring 8 tracks from the score, was published by the film's North American distributor Walt Disney Pictures' in the end of 2005, to coincide the forthcoming awards season.

Reception
Glen Chapman of Den of Geek wrote "Hisaishi and the Japanese Philharmonic Orchestra combine here to brilliant effect, creating a beautiful, sweeping score that complements the movie perfectly". Sam Sewell-Peterson of The Film Magazine commented "Miyazaki’s regular collaborator, Joe Hisaishi, scores the film, and the soundtrack is simple yet effective – he can bring a tear to your eye with a couple of well placed notes without fail. The score sounds a lot like a lullaby, and whilst it may have the power to send young children to sleep, it stirs entirely other emotions in adults – it causes you to reminisce, to remember happier times when the world was so much simpler." Sunah Ramsey of Collider wrote "If there is one thing this soundtrack has, it is energy. Just like Howl’s slapdash nature, the melody picks the audience up and escapades them on a whimsical journey. The chirping flutes and waltz-like rhythm feel like sunshine on a spring day."