D Power Diesle, Manga Saint Hilare made "Déjà vu" available on October 9, 2020. Déjà vu is 2 minutes and 45 seconds long and may contain bad words that may be unsuitable for children. 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 below average in popularity 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 D Power Diesle, Manga Saint Hilare is Vivace (lively and fast), since this song has a tempo of 175 テンポ. With that information, we can conclude that the song has a fast tempo. The time signature for this track is 5/4.

Déjà vu キー

A Major is the music key of this track. This also means that this song has a camelot key of 11B. So, the perfect camelot match for 11B would be either 11B or 12A. While, 12B can give you a low energy boost. For moderate energy boost, you would use 8B and a high energy boost can either be 1B or 6B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 11A or 10B will give you a low energy drop, 2B would be a moderate one, and 9B or 4B would be a high energy drop. Lastly, 8A allows you to change the mood.