Yuka's '世界の約束（ハウルの動く城より）' came out on June 20, 2006. With this song being around four minutes long, at 4:06, the duration of this song is pretty average compared to other songs. This track is safe for children and doesn't appear to contain any foul language, since the "Explicit" tag was not present in this track. There is only one song in 宮崎 駿の世界 (ヴァイオリンとピアノの調べ), so we believe that "世界の約束（ハウルの動く城より）" is a single. Based on our statistics, 世界の約束（ハウルの動く城より）'s popularity is below average in popularity right now. In our opinion, the overall tone is not very danceable and projects negative sounds, such as being sad, depressed, or angry.

世界の約束（ハウルの動く城より） テンポ

The tempo marking of 世界の約束（ハウルの動く城より） by Yuka is Moderato (at a moderate speed), since this song has a tempo of 120 テンポ. With that information, we can conclude that the song has a fast tempo. This song can go great with walking. The time signature for this track is 3/4.

世界の約束（ハウルの動く城より） キー

The music key of this track is G Major. This also means that this song has a camelot key of 9B. So, the perfect camelot match for 9B would be either 9B or 10A. While, 10B can give you a low energy boost. For moderate energy boost, you would use 6B and a high energy boost can either be 11B or 4B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 9A or 8B will give you a low energy drop, 12B would be a moderate one, and 7B or 2B would be a high energy drop. Lastly, 6A allows you to change the mood.