"21" by Streetz had its release date on November 22, 2016. 21 is 2 minutes and 16 seconds long and may contain bad words that may be unsuitable for children. There is only one song in 82, so we believe that "21" is a single. In terms of popularity, 21 is currently unknown. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

21 テンポ

The tempo marking of 21 by Streetz is Moderato (at a moderate speed), since this song has a tempo of 113 テンポ. With that information, we can conclude that the song has a moderate tempo. The time signature for this track is 4/4.

21 キー

This song has a musical key of F♯ Major. This also means that 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.