A-Mei Chang made "知己" available on August 3, 2007. With this song being about 5 minutes long, at 4:43, "知己" by A-Mei Chang is fairly a long song compared to the average song length. This song does not have an "Explicit" tag, making it safe for all ages. There are a total of 12 in the song's album "Star". In this album, this song's track order is #5. 知己 is below average in popularity right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

知己 テンポ

With 知己 by A-Mei Chang having a テンポ of 78 with a half-time of 39 テンポ and a double-time of 156 テンポ, we would consider this track to have a Andante (at a walking pace) tempo marking. Because of this, we believe that the song has an overall slow tempo. The time signature for this track is 4/4.

知己 キー

D♭ 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 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.