"心を落ち着かせる" by アルファ回復 was released on August 18, 2020. 心を落ち着かせる is about six minutes long, preciously at 6:27, making this song fairly long compared to other songs. There is only one song in 早く眠るα波: 今すぐ眠りたい人の為の睡眠導入音楽, so we believe that "心を落ち着かせる" is a single. Based on our statistics, 心を落ち着かせる's popularity 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 心を落ち着かせる by アルファ回復 is Allegro (fast, quick, and bright), since this song has a tempo of 139 テンポ. With that information, we can conclude that the song has a fast tempo. This song can go great with walking. The time signature for this track is 4/4.
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.