"Heart and Spine" by Heirloom was released on July 17, 2020. Heart and Spine is explicit and may not be suitable for children. With the duration being about 3:54, this song is close to the average duration of a typical track. Because this song is the only song in Heart and Spine and no other songs are present in the album, we classify this track as a single. Based on our statistics, Heart and Spine's popularity is not that popular right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

Heart and Spine テンポ

We consider the tempo marking of Heart and Spine by Heirloom to be Allegro (fast, quick, and bright) because the track has a tempo of 132 テンポ, a half-time of 66テンポ, and a double-time of 264 テンポ. Based on that, the speed of the song's tempo is fast. Activities such as, walking, can go well with this song. The time signature for this track is 4/4.

Heart and Spine キー

This song is in the music key of G Major. This also means that this song has a camelot key of 9B. So, the perfect camelot match for 9B would be either 9B or 10A. While, 10B can give you a low energy boost. For moderate energy boost, you would use 6B and a high energy boost can either be 11B or 4B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 9A or 8B will give you a low energy drop, 12B would be a moderate one, and 7B or 2B would be a high energy drop. Lastly, 6A allows you to change the mood.