Soyoka Hayashi's '赤い糸' had a release date set for January 20, 2016. This song is about six minutes long, preciously at 6:09, making this song fairly long compared to other songs. There is only one song in 恋するピアノ, so we believe that "赤い糸" is a single. 赤い糸 is 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.
The tempo marking of 赤い糸 by Soyoka Hayashi is Andante (at a walking pace), since this song has a tempo of 89 BPM. 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.
This song has a musical key of A Major. This also means that this song has a camelot key of 11B. So, the perfect camelot match for 11B would be either 11B or 12A. While, 12B can give you a low energy boost. For moderate energy boost, you would use 8B and a high energy boost can either be 1B or 6B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 11A or 10B will give you a low energy drop, 2B would be a moderate one, and 9B or 4B would be a high energy drop. Lastly, 8A allows you to change the mood.