familypet made "could have been" available on March 1, 2019. The duration of could have been is about 3 minutes long, at 3:15. Based on our data, "could have been" appears to be safe for all ages and is not considered explicit. This track is about the average length of a typical track. Because this song is the only song in could have been and no other songs are present in the album, we classify this track as a single. Based on our statistics, could have been's popularity is below average in popularity right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

could have been テンポ

The tempo marking of could have been by familypet is Allegro (fast, quick, and bright), since this song has a tempo of 152 テンポ. With that information, we can conclude that the song has a fast tempo. This song can go great with running. The time signature for this track is 4/4.

could have been 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.