Jung Woo's '서신' came out on February 9, 2006. The duration of 서신 is about 3 minutes long, at 3:21. Based on our data, "서신" appears to be safe for all ages and is not considered explicit. This track is about the average length of a typical track. There is only one song in 천국의 나무 (Original Television Soundtrack), so we believe that "서신" is a single. The popularity of 서신 is currently 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.

서신 テンポ

The tempo marking of 서신 by Jung Woo is Presto (very, very fast), since this song has a tempo of 192 テンポ. With that information, we can conclude that the song has a fast tempo. The time signature for this track is 3/4.

서신 キー

This song is in the music key of F Minor. Because this track belongs in the F Minor key, the camelot key is 4A. So, the perfect camelot match for 4A would be either 4A or 3B. While, a low energy boost can consist of either 4B or 5A. For moderate energy boost, you would use 1A and a high energy boost can either be 6A or 11A. However, if you are looking for a low energy drop, finding a song with a camelot key of 3A would be a great choice. Where 7A would give you a moderate drop, and 2A or 9A would be a high energy drop. Lastly, 7B allows you to change the mood.