77's '21st Century Rock' had a release date set for April 8, 2010. With this song being about 5 minutes long, at This song 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 is only one song in 21st Century Rock, so we believe that "21st Century Rock" is a single. Based on our statistics, 21st Century Rock's popularity is unknown right now. Although the overall vibe is very danceable, it does project more negative sounds.

21st Century Rock テンポ

The tempo marking of 21st Century Rock by 77 is Allegro (fast, quick, and bright), since this song has a tempo of 124 テンポ. With that information, we can conclude that the song has a fast tempo. This song can go great with walking. The time signature for this track is 4/4.

21st Century Rock キー

G Major is the music key of this track. This also means that this song has a camelot key of 9B. So, the perfect camelot match for 9B would be either 9B or 10A. While, 10B can give you a low energy boost. For moderate energy boost, you would use 6B and a high energy boost can either be 11B or 4B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 9A or 8B will give you a low energy drop, 12B would be a moderate one, and 7B or 2B would be a high energy drop. Lastly, 6A allows you to change the mood.