"優しいうた" by Nanase Aikawa was released on July 8, 1998. 優しいうた is about six minutes long, preciously at 6:22, making this song fairly long compared to other songs. The song is number 11 out of 11 in crimson by Nanase Aikawa. In terms of popularity, 優しいうた is currently not that popular. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.
The tempo marking of 優しいうた by Nanase Aikawa is Andante (at a walking pace), since this song has a tempo of 102 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 3/4.
This song has a musical key of D Major. This also means that this song has a camelot key of 10B. So, the perfect camelot match for 10B would be either 10B or 11A. While, 11B can give you a low energy boost. For moderate energy boost, you would use 7B and a high energy boost can either be 12B or 5B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 10A or 9B will give you a low energy drop, 1B would be a moderate one, and 8B or 3B would be a high energy drop. Lastly, 7A allows you to change the mood.