Eir Aoi made "心臓 -Instrumental" available on October 19, 2022. With this song being around four minutes long, at 3:34, 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 心臓, so we believe that "心臓 -Instrumental" is a single. Based on our statistics, 心臓 -Instrumental's popularity is below average in popularity right now. The overall mood can be danceable to some, especially with it's high amount of postive energy.
The tempo marking of 心臓 -Instrumental by Eir Aoi is Allegro (fast, quick, and bright), since this song has a tempo of 134 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.
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.