"A Happy Theory" by Mutlorn was released on February 4, 2020. The duration of A Happy Theory is about two minutes long, specifically at 2:10. This song does not appear to have any foul language. A Happy Theory's duration is considered a little bit shorter than the average duration of a typical track. Because this song is the only song in A Happy Theory and no other songs are present in the album, we classify this track as a single. In terms of popularity, A Happy Theory is currently not that popular. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

A Happy Theory テンポ

The tempo marking of A Happy Theory by Mutlorn is Andante (at a walking pace), since this song has a tempo of 100 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 4/4.

A Happy Theory キー

This song is in the music key of B♭ Major. This also means that this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.