Yu Seung Woo, San E made "U Who?" available on October 22, 2013. With this song being around four minutes long, at 3:38, 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. There are a total of 2 in the song's album "U Who?". In this album, this song's track order is #1. In terms of popularity, U Who? is currently not that popular. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

U Who? テンポ

With U Who? by Yu Seung Woo, San E having a テンポ of 109 with a half-time of 54 テンポ and a double-time of 218 テンポ, we would consider this track to have a Moderato (at a moderate speed) tempo marking. Because of this, we believe that the song has an overall moderate tempo. The time signature for this track is 4/4.

U Who? キー

The music key of this track is D♭ Major. Or for those who are familiar with the camelot wheel, 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.