Yun Wob made "Flash" available on November 21, 2019. For a fairly short song, this song is "Flash" is considered an explicit song with a duration of 1:49. Because this song is the only song in Flash and no other songs are present in the album, we classify this track as a single. The popularity of Flash is currently not that popular right now. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.
The tempo marking of Flash by Yun Wob is Presto (very, very fast), since this song has a tempo of 181 テンポ. With that information, we can conclude that the song has a fast tempo. The time signature for this track is 4/4.
The music key of this track is D♭ Major. 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.