"Ruthless" by Tsuruda was released on February 28, 2020. With this song being around four minutes long, at 4:12, 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 track order of this song in Tsuruda's "Lifeline" album is number 1 out of 5. On top of that, United States appears to be the country where this track was created. Ruthless is unknown right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

Ruthless テンポ

We consider the tempo marking of Ruthless by Tsuruda to be Adagio (slowly with great expression) because the track has a tempo of 76 テンポ, a half-time of 38テンポ, and a double-time of 152 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.

Ruthless キー

This song has a musical key of B Major. This also means that this song has a camelot key of 1B. So, the perfect camelot match for 1B would be either 1B or 2A. While, 2B can give you a low energy boost. For moderate energy boost, you would use 10B and a high energy boost can either be 3B or 8B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 1A or 12B will give you a low energy drop, 4B would be a moderate one, and 11B or 6B would be a high energy drop. Lastly, 10A allows you to change the mood.