Rei's 'B.U.' came out on November 25, 2020. With this song being around four minutes long, at 3:43, 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. The track order of this song in Rei's "HONEY" album is number 1 out of 12. On top of that, Japan appears to be the country where this track was created. Based on our statistics, B.U.'s popularity is below average in popularity right now. Although the overall vibe is very danceable, it does project more negative sounds.

B.U. テンポ

We consider the tempo marking of B.U. by Rei to be Allegro (fast, quick, and bright) because the track has a tempo of 124 テンポ, a half-time of 62テンポ, and a double-time of 248 テンポ. Based on that, the speed of the song's tempo is fast. Activities such as, walking, can go well with this song. The time signature for this track is 3/4.

B.U. キー

This song has a musical key of D Major. This also means that this song has a camelot key of 10B. So, the perfect camelot match for 10B would be either 10B or 11A. While, 11B can give you a low energy boost. For moderate energy boost, you would use 7B and a high energy boost can either be 12B or 5B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 10A or 9B will give you a low energy drop, 1B would be a moderate one, and 8B or 3B would be a high energy drop. Lastly, 7A allows you to change the mood.