Firewoodisland made "Who Knew" available on February 17, 2023. With this song being around four minutes long, at 3:42, 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. Since Who Knew only contains only one song in the album, we like to consider this song as a single. Based on our statistics, Who Knew's popularity is unknown right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

Who Knew テンポ

Since Who Knew by Firewoodisland has a tempo of 150 beats per a minute, the tempo markings of this song would be Allegro (fast, quick, and bright). With Who Knew being at 150 テンポ, the half-time would be 75 テンポ with a double-time of 300 テンポ.In addition, we consider the tempo speed to be pretty fast for this song. This makes this song perfect for activities such as, jogging or cycling. The time signature for this track is 4/4.

Who Knew キー

F♯ Major is the music key of this track. Or for those who are familiar with the camelot wheel, 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.