D.One made "Heart (Freestyle)" available on December 28, 2016. Heart (Freestyle) is 2 minutes and 58 seconds long and may contain bad words that may be unsuitable for children. The track order of this song in D.One's "Grindstone: The Collection" album is number 47 out of 100. In terms of popularity, Heart (Freestyle) is currently unknown. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

Heart (Freestyle) テンポ

We consider the tempo marking of Heart (Freestyle) by D.One to be Andante (at a walking pace) because the track has a tempo of 91 テンポ, a half-time of 46テンポ, and a double-time of 182 テンポ. Based on that, the speed of the song's tempo is slow. Activities such as, yoga or pilates, can go well with this song. The time signature for this track is 4/4.

Heart (Freestyle) キー

D♭ Major is the music key of this track. This also means that this song has a camelot key of 3B. So, the perfect camelot match for 3B would be either 3B or 4A. While, 4B can give you a low energy boost. For moderate energy boost, you would use 12B and a high energy boost can either be 5B or 10B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 3A or 2B will give you a low energy drop, 6B would be a moderate one, and 1B or 8B would be a high energy drop. Lastly, 12A allows you to change the mood.