KUSUO, Hiroko made "手紙。。" available on 2007. With this song being about 5 minutes long, at 5:12, "手紙。。" by KUSUO, Hiroko 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 こいも俺ですばい, so we believe that "手紙。。" is a single. 手紙。。 is average in popularity right now. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

手紙。。 テンポ

The tempo marking of 手紙。。 by KUSUO, Hiroko is Andante (at a walking pace), since this song has a tempo of 85 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.

手紙。。 キー

This song is in the music key of F Major. This also means that this song has a camelot key of 7B. So, the perfect camelot match for 7B would be either 7B or 8A. While, 8B can give you a low energy boost. For moderate energy boost, you would use 4B and a high energy boost can either be 9B or 2B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 7A or 6B will give you a low energy drop, 10B would be a moderate one, and 5B or 12B would be a high energy drop. Lastly, 4A allows you to change the mood.