F.I.R.'s '愛在蔓延時' came out on July 20, 2021. With this song being about 5 minutes long, at 5:01, "愛在蔓延時" by F.I.R. 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 鑽石之心, so we believe that "愛在蔓延時" is a single. 愛在蔓延時 is below average in popularity right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

愛在蔓延時 テンポ

The tempo marking of 愛在蔓延時 by F.I.R. is Andante (at a walking pace), since this song has a tempo of 78 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.

愛在蔓延時 キー

F♯ Major is the music key of this track. This also means that this song has a camelot key of 2B. So, the perfect camelot match for 2B would be either 2B or 3A. While, 3B can give you a low energy boost. For moderate energy boost, you would use 11B and a high energy boost can either be 4B or 9B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 2A or 1B will give you a low energy drop, 5B would be a moderate one, and 12B or 7B would be a high energy drop. Lastly, 11A allows you to change the mood.