灰澈 made "星萤火" available on July 21, 2017. With this song being around four minutes long, at 3:30, 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 is only one song in 星萤火, so we believe that this song is a single. In terms of popularity, 星萤火 is currently not that popular. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.

星萤火 テンポ

The tempo marking of 星萤火 by 灰澈 is Moderato (at a moderate speed), since this song has a tempo of 111 テンポ. With that information, we can conclude that the song has a moderate tempo. The time signature for this track is 4/4.

星萤火 キー

C Major is the music key of this track. This also means that this song has a camelot key of 8B. So, the perfect camelot match for 8B would be either 8B or 9A. While, 9B can give you a low energy boost. For moderate energy boost, you would use 5B and a high energy boost can either be 10B or 3B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 8A or 7B will give you a low energy drop, 11B would be a moderate one, and 6B or 1B would be a high energy drop. Lastly, 5A allows you to change the mood.