Prism Heart made "Promise" available on October 1, 2021. With this song being around four minutes long, at 3:32, 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. There are a total of 15 in the song's album "Pangloss". In this album, this song's track order is #5. In terms of popularity, Promise is currently unknown. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.
With Promise by Prism Heart having a テンポ of 105 with a half-time of 52 テンポ and a double-time of 210 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.
This song has a musical key of A♭ Minor. Which also means that the camelot key for this song is 1A. So, the perfect camelot match for 1A would be either 1A or 12B. While, a low energy boost can consist of either 1B or 2A. For moderate energy boost, you would use 10A and a high energy boost can either be 3A or 8A. However, if you are looking for a low energy drop, finding a song with a camelot key of 12A would be a great choice. Where 4A would give you a moderate drop, and 11A or 6A would be a high energy drop. Lastly, 4B allows you to change the mood.