B4 by 安藤 優 Song Details

安藤 優's ' "B4" was released on its scheduled release date, October 23, 2025. The duration of This song is about 3 minutes long, at 3:24. Based on our data, This song appears to be safe for all ages and is not considered explicit. This track is about the average length of a typical track. There are a total of 10 in the song's album "STORM". In this album, this song's track order is #10. In terms of popularity, B4 is currently not that popular. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.

BPM and Tempo

With B4 by 安藤 優 having a BPM of 114 with a half-time of 57 BPM and a double-time of 228 BPM, we would consider this track to have a Moderato (at a moderate speed) tempo marking. Because of this, we believe that the song has an overall moderate tempo. The time signature for this track is 4/4.

Music Key

D♭ Major is the music key of this track. Or for those who are familiar with the camelot wheel, this song has a camelot key of 3B. So, the perfect camelot match for 3B would be either 3B or 4A. While, 4B can give you a low energy boost. For moderate energy boost, you would use 12B and a high energy boost can either be 5B or 10B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 3A or 2B will give you a low energy drop, 6B would be a moderate one, and 1B or 8B would be a high energy drop. Lastly, 12A 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!