"永遠の誓い" by Koi Whispers had its release date on October 16, 2023. With This song being less than two minutes long, at 1:08, we are fairly confident that this song is not explicit and is safe for all ages. Based on the duration of this song, this song duration is much smaller than the average song duration. There is only one song in 神秘の夜空, so we believe that "永遠の誓い" is a single. 永遠の誓い 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.

永遠の誓い テンポ

The tempo marking of 永遠の誓い by Koi Whispers is Adagio (slowly with great expression), since this song has a tempo of 69 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 5/4.

永遠の誓い キー

This song is in the music key of B♭ Major. This also means that this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.