Marina Kaye's 'Iron Heart' came out on May 18, 2015. With this song being around four minutes long, at 3:47, 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. The song is number 6 out of 11 in Fearless by Marina Kaye. In terms of popularity, Iron Heart is currently below average in popularity. Although the overall vibe is very danceable, it does project more negative sounds.

Iron Heart テンポ

The tempo marking of Iron Heart by Marina Kaye is Andante (at a walking pace), since this song has a tempo of 104 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.

Iron Heart キー

This song is in the music key of D♭ Minor. This also means that this song has a camelot key of 12A. So, the perfect camelot match for 12A would be either 12A or 11B. While, a low energy boost can consist of either 12B or 1A. For moderate energy boost, you would use 9A and a high energy boost can either be 2A or 7A. However, if you are looking for a low energy drop, finding a song with a camelot key of 11A would be a great choice. Where 3A would give you a moderate drop, and 10A or 5A would be a high energy drop. Lastly, 3B allows you to change the mood.