"a letter to you" by lunasgrave was released on August 5, 2020. a letter to you is about six minutes long, preciously at 5:53, making this song fairly long compared to other songs. Because this song is the only song in a letter to you and no other songs are present in the album, we classify this track as a single. In terms of popularity, a letter to you is currently unknown. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

a letter to you テンポ

The tempo marking of a letter to you by lunasgrave is Andante (at a walking pace), since this song has a tempo of 101 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 4/4.

a letter to you キー

This song is in the music 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.