"人間関係の修復 (639hz)" by ソルフェジオ俱楽部 was released on September 30, 2021. With this song being about 5 minutes long, at 5:27, "人間関係の修復 (639hz)" by ソルフェジオ俱楽部 is fairly a long song compared to the average song length. This song does not have an "Explicit" tag, making it safe for all ages. There is only one song in ソルフェジオ周波数 / 全集 (Vol.1), so we believe that "人間関係の修復 (639hz)" is a single. 人間関係の修復 (639hz) is not that popular right now. In our opinion, the overall tone is not very danceable and projects negative sounds, such as being sad, depressed, or angry.
The tempo marking of 人間関係の修復 (639hz) by ソルフェジオ俱楽部 is Adagio (slowly with great expression), since this song has a tempo of 70 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 4/4.
A Major is the music key of this track. 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.