"Blue Doors Ahead" by F.I.R. was released on September 28, 2007. With this song being about 5 minutes long, at 4:37, "Blue Doors Ahead" by F.I.R. 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. There is only one song in 愛‧歌姬, so we believe that "Blue Doors Ahead" is a single. The popularity of Blue Doors Ahead is currently not that popular right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

Blue Doors Ahead テンポ

The tempo marking of Blue Doors Ahead by F.I.R. is Presto (very, very fast), since this song has a tempo of 180 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.

Blue Doors Ahead キー

G Major is the music key of this track. 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.