羅文傑 made "當你看完這封信" available on 1978. The duration of 當你看完這封信 is about two minutes long, specifically at 2:36. This song does not appear to have any foul language. 當你看完這封信's duration is considered a little bit shorter than the average duration of a typical track. There is only one song in 當你看完這封信, so we believe that "當你看完這封信" is a single. 當你看完這封信 is not that popular right now. Based on the vibe, this track doesn't seem to be that danceable, however its valence properties can make this some somewhat danceable.

當你看完這封信 テンポ

The tempo marking of 當你看完這封信 by 羅文傑 is Andante (at a walking pace), since this song has a tempo of 81 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.

當你看完這封信 キー

A♭ Major is the music key of this track. This also means that this song has a camelot key of 4B. So, the perfect camelot match for 4B would be either 4B or 5A. While, 5B can give you a low energy boost. For moderate energy boost, you would use 1B and a high energy boost can either be 6B or 11B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 4A or 3B will give you a low energy drop, 7B would be a moderate one, and 2B or 9B would be a high energy drop. Lastly, 1A allows you to change the mood.