KO, J'Something, Msaki, Q Twins made "Rainbow" available on April 29, 2020. With this song being around four minutes long, at 3:36, 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. Since Rainbow only contains only one song in the album, we like to consider this song as a single. Rainbow is below average in popularity right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

Rainbow テンポ

With Rainbow by KO, J'Something, Msaki, Q Twins having a テンポ of 83 with a half-time of 42 テンポ and a double-time of 166 テンポ, we would consider this track to have a Andante (at a walking pace) tempo marking. Because of this, we believe that the song has an overall slow tempo. The time signature for this track is 4/4.

Rainbow キー

This song is in the music key of F Major. Or for those who are familiar with the camelot wheel, this song has a camelot key of 7B. So, the perfect camelot match for 7B would be either 7B or 8A. While, 8B can give you a low energy boost. For moderate energy boost, you would use 4B and a high energy boost can either be 9B or 2B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 7A or 6B will give you a low energy drop, 10B would be a moderate one, and 5B or 12B would be a high energy drop. Lastly, 4A allows you to change the mood.