LÜCY's '2021' came out on June 12, 2022. With this song being around four minutes long, at 3:42, 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. The track order of this song in LÜCY's "LÜCY" album is number 1 out of 11. On top of that, Taiwan appears to be the country where this track was created. 2021 is below average in popularity right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

2021 テンポ

We consider the tempo marking of 2021 by LÜCY to be Lento (slowly) because the track has a tempo of 58 テンポ, a half-time of 29テンポ, and a double-time of 116 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.

2021 キー

This song is in the music key of E Minor. Because this track belongs in the E Minor key, the camelot key is 9A. So, the perfect camelot match for 9A would be either 9A or 8B. While, a low energy boost can consist of either 9B or 10A. For moderate energy boost, you would use 6A and a high energy boost can either be 11A or 4A. However, if you are looking for a low energy drop, finding a song with a camelot key of 8A would be a great choice. Where 12A would give you a moderate drop, and 7A or 2A would be a high energy drop. Lastly, 12B allows you to change the mood.