Asher Postman, Tasji made "Déjà vu" available on October 23, 2020. With this song being around four minutes long, at 3:32, 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. Because this song is the only song in Déjà vu and no other songs are present in the album, we classify this track as a single. The popularity of Déjà vu is currently not that popular right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

Déjà vu テンポ

The tempo marking of Déjà vu by Asher Postman, Tasji is Vivace (lively and fast), since this song has a tempo of 163 テンポ. With that information, we can conclude that the song has a fast tempo. The time signature for this track is 4/4.

Déjà vu キー

D♭ Major is the music key of this track. This also means that 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.