Kellyjackie's '別有用心' came out on September 18, 2012. With this song being around four minutes long, at 4:19, 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 8 in the song's album "Seven Years". In this album, this song's track order is #1. Furthermore, we believe that the track originated from Hong Kong. Based on our statistics, 別有用心's popularity is not that popular right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

別有用心 テンポ

With 別有用心 by Kellyjackie having a テンポ of 138 with a half-time of 69 テンポ and a double-time of 276 テンポ, we would consider this track to have a Allegro (fast, quick, and bright) tempo marking. Because of this, we believe that the song has an overall fast tempo. Looking at the テンポ of this song, this song might go great with walking. The time signature for this track is 4/4.

別有用心 キー

This song is in the music key of B♭ Major. Or for those who are familiar with the camelot wheel, this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.