TWICE made "21:29 - Japanese ver." available on September 16, 2020. With this song being around four minutes long, at 3:51, 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 is only one song in #TWICE3, so we believe that "21:29 - Japanese ver." is a single. The popularity of 21:29 - Japanese ver. is currently below average in popularity right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

21:29 - Japanese ver. テンポ

The tempo marking of 21:29 - Japanese ver. by TWICE is Presto (very, very fast), since this song has a tempo of 180 テンポ. With that information, we can conclude that the song has a fast tempo. The time signature for this track is 3/4.

21:29 - Japanese ver. キー

This song has a musical key of B Major. This also means that this song has a camelot key of 1B. So, the perfect camelot match for 1B would be either 1B or 2A. While, 2B can give you a low energy boost. For moderate energy boost, you would use 10B and a high energy boost can either be 3B or 8B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 1A or 12B will give you a low energy drop, 4B would be a moderate one, and 11B or 6B would be a high energy drop. Lastly, 10A allows you to change the mood.