nabru, Dro made "Sei" available on May 28, 2020. Sei is explicit and may not be suitable for children. With the duration being about 3:43, this song is close to the average duration of a typical track. The track order of this song in nabru's "Heartbeat" album is number 4 out of 7. In terms of popularity, Sei is currently not that popular. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

Sei テンポ

We consider the tempo marking of Sei by nabru, Dro to be Andante (at a walking pace) because the track has a tempo of 98 テンポ, a half-time of 49テンポ, and a double-time of 196 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.

Sei キー

This song has a musical key of A Major. This also means that this song has a camelot key of 11B. So, the perfect camelot match for 11B would be either 11B or 12A. While, 12B can give you a low energy boost. For moderate energy boost, you would use 8B and a high energy boost can either be 1B or 6B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 11A or 10B will give you a low energy drop, 2B would be a moderate one, and 9B or 4B would be a high energy drop. Lastly, 8A allows you to change the mood.