Meltberry made "What Have I Done?" available on February 2, 2020. With this song being about 5 minutes long, at 4:45, "What Have I Done?" by Meltberry is fairly a long song compared to the average song length. This song does not have an "Explicit" tag, making it safe for all ages. The track order of this song in Meltberry's "Morphosis (Dusk)" album is number 10 out of 11. In terms of popularity, What Have I Done? is currently not that popular. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

What Have I Done? テンポ

We consider the tempo marking of What Have I Done? by Meltberry to be Andante (at a walking pace) because the track has a tempo of 90 テンポ, a half-time of 45テンポ, and a double-time of 180 テンポ. Based on that, the speed of the song's tempo is slow. Activities such as, yoga or pilates, can go well with this song. The time signature for this track is 4/4.

What Have I Done? キー

This song is in the music key of G Major. This also means that this song has a camelot key of 9B. So, the perfect camelot match for 9B would be either 9B or 10A. While, 10B can give you a low energy boost. For moderate energy boost, you would use 6B and a high energy boost can either be 11B or 4B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 9A or 8B will give you a low energy drop, 12B would be a moderate one, and 7B or 2B would be a high energy drop. Lastly, 6A allows you to change the mood.