Busy made "4K" available on May 9, 2024. For a fairly short song, this song is "4K" is considered an explicit song with a duration of 1:43. There is only one song in 4K, so we believe that this song is a single. 4K is not that popular right now. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

4K テンポ

The tempo marking of 4K by Busy is Adagio (slowly with great expression), since this song has a tempo of 75 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 1/4.

4K キー

A♭ Major is the music key of this track. This also means that this song has a camelot key of 4B. So, the perfect camelot match for 4B would be either 4B or 5A. While, 5B can give you a low energy boost. For moderate energy boost, you would use 1B and a high energy boost can either be 6B or 11B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 4A or 3B will give you a low energy drop, 7B would be a moderate one, and 2B or 9B would be a high energy drop. Lastly, 1A allows you to change the mood.