FLY TO THE SKY made "Once Again" available on September 14, 2015. With this song being around four minutes long, at 3:43, 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. The track order of this song in FLY TO THE SKY's "LOVE & HATE" album is number 3 out of 5. On top of that, South Korea appears to be the country where this track was created. In terms of popularity, Once Again is currently not that popular. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

Once Again テンポ

We consider the tempo marking of Once Again by FLY TO THE SKY to be Moderato (at a moderate speed) because the track has a tempo of 118 テンポ, a half-time of 59テンポ, and a double-time of 236 テンポ. Based on that, the speed of the song's tempo is moderate. Activities such as, walking, can go well with this song. The time signature for this track is 4/4.

Once Again キー

F♯ Major is the music key of this track. This also means that this song has a camelot key of 2B. So, the perfect camelot match for 2B would be either 2B or 3A. While, 3B can give you a low energy boost. For moderate energy boost, you would use 11B and a high energy boost can either be 4B or 9B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 2A or 1B will give you a low energy drop, 5B would be a moderate one, and 12B or 7B would be a high energy drop. Lastly, 11A allows you to change the mood.