Masaharu Fukuyama made "少年" available on August 11, 2010. With this song being about 5 minutes long, at 5:03, "少年" by Masaharu Fukuyama 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 蛍/少年, so we believe that "少年" is a single. 少年 is below average in popularity right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

少年 テンポ

The tempo marking of 少年 by Masaharu Fukuyama is Andante (at a walking pace), since this song has a tempo of 88 テンポ. With that information, we can conclude that the song has a slow tempo. This song can go great with yoga or pilates. The time signature for this track is 4/4.

少年 キー

This song is in the music key of B♭ Major. This also means that this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.