U-N-O made "D-DAY" available on October 24, 2022. D-DAY is 2 minutes and 16 seconds long and may contain bad words that may be unsuitable for children. Because this song is the only song in D-DAY and no other songs are present in the album, we classify this track as a single. In terms of popularity, D-DAY is currently not that popular. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.

D-DAY テンポ

The tempo marking of D-DAY by U-N-O is Andante (at a walking pace), since this song has a tempo of 102 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.

D-DAY キー

This song has a musical key of A♭ Major. This also means that this song has a camelot key of 4B. So, the perfect camelot match for 4B would be either 4B or 5A. While, 5B can give you a low energy boost. For moderate energy boost, you would use 1B and a high energy boost can either be 6B or 11B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 4A or 3B will give you a low energy drop, 7B would be a moderate one, and 2B or 9B would be a high energy drop. Lastly, 1A allows you to change the mood.