Azuki made "Don't know why" available on July 25, 2021. With this song being around four minutes long, at 3:39, 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 Don't know why and no other songs are present in the album, we classify this track as a single. In terms of popularity, Don't know why is currently below average in popularity. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

Don't know why テンポ

The tempo marking of Don't know why by Azuki is Andante (at a walking pace), since this song has a tempo of 106 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.

Don't know why キー

F Major is the music key of this track. This also means that this song has a camelot key of 7B. So, the perfect camelot match for 7B would be either 7B or 8A. While, 8B can give you a low energy boost. For moderate energy boost, you would use 4B and a high energy boost can either be 9B or 2B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 7A or 6B will give you a low energy drop, 10B would be a moderate one, and 5B or 12B would be a high energy drop. Lastly, 4A allows you to change the mood.