Maison book girl's ' "river" was released on its scheduled release date, June 24, 2020. With this song being around four minutes long, at 4:29, 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 song is number 5 out of 18 in Best Album『Fiction』 by Maison book girl. In terms of popularity, river is currently not that popular. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

river テンポ

The tempo marking of river by Maison book girl is Andante (at a walking pace), since this song has a tempo of 101 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 3/4.

river キー

This song is in the music key of G Major. 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.