群青の理由 by Cielo Song Details

Cielo's ' "群青の理由" was released on its scheduled release date, December 11, 2025. With this song being around four minutes long, at 3:57, 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 群青の理由, so we believe that this song is a single. Based on our statistics, 群青の理由's popularity is not that popular right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

BPM and Tempo

The tempo marking of 群青の理由 by Cielo is Allegro (fast, quick, and bright), since this song has a tempo of 139 BPM. 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 4/4.

Music Key

B♭ Major is the music key of this track. This also means that this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.

Want to find the BPM and music key for other songs? Check out our BPM and Key Finder page!