Aku's 'Keisei Gyakuten' came out on March 25, 2021. The duration of Keisei Gyakuten is about two minutes long, specifically at 2:46. This song does not appear to have any foul language. Keisei Gyakuten's duration is considered a little bit shorter than the average duration of a typical track. Because this song is the only song in Keisei Gyakuten and no other songs are present in the album, we classify this track as a single. In terms of popularity, Keisei Gyakuten is currently average in popularity. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

Keisei Gyakuten テンポ

We consider the tempo marking of Keisei Gyakuten by Aku to be Andante (at a walking pace) because the track has a tempo of 90 テンポ, a half-time of 45テンポ, and a double-time of 180 テンポ. Based on that, the speed of the song's tempo is slow. Activities such as, yoga or pilates, can go well with this song. The time signature for this track is 4/4.

Keisei Gyakuten キー

G Major is the music key of this track. 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.