Prelow made "Back When" available on March 16, 2018. The duration of Back When is about two minutes long, specifically at 2:29. This song does not appear to have any foul language. Back When's duration is considered a little bit shorter than the average duration of a typical track. Because this song is the only song in Back When and no other songs are present in the album, we classify this track as a single. In terms of popularity, Back When is currently below average in popularity. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

Back When テンポ

The tempo marking of Back When by Prelow is Moderato (at a moderate speed), since this song has a tempo of 118 テンポ. With that information, we can conclude that the song has a moderate tempo. This song can go great with walking. The time signature for this track is 4/4.

Back When キー

This song has a musical key of A Major. 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.