"Love Letter" by Jo-Yu Chen, 爵士鋼琴三重奏 was released on May 11, 2012. Since Love Letter is still less than 10 minute long, it is still considered a pretty long duration song compared to the average song length. This song does not appear to be explicit due to the lack of the "E" tag. The track order of this song in Jo-Yu Chen, 爵士鋼琴三重奏's "Incomplete Soul" album is number 6 out of 13. In terms of popularity, Love Letter 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.

Love Letter テンポ

We consider the tempo marking of Love Letter by Jo-Yu Chen, 爵士鋼琴三重奏 to be Andante (at a walking pace) because the track has a tempo of 102 テンポ, a half-time of 51テンポ, and a double-time of 204 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.

Love Letter キー

This song is in the music key of C Major. This also means that this song has a camelot key of 8B. So, the perfect camelot match for 8B would be either 8B or 9A. While, 9B can give you a low energy boost. For moderate energy boost, you would use 5B and a high energy boost can either be 10B or 3B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 8A or 7B will give you a low energy drop, 11B would be a moderate one, and 6B or 1B would be a high energy drop. Lastly, 5A allows you to change the mood.