"憶故人 (En pensant à un ami) [Thinking of a Friend]" by 蘇思棣 (Sou Si-tai) was released on 2007. Since 憶故人 (En pensant à un ami) [Thinking of a Friend] 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. There is only one song in 中國:古琴, 文人的樂器 (Chine: Le qin, cithare des lettrés) [China: The Qin, Zither of the Literati], so we believe that "憶故人 (En pensant à un ami) [Thinking of a Friend]" is a single. In terms of popularity, 憶故人 (En pensant à un ami) [Thinking of a Friend] 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.
The tempo marking of 憶故人 (En pensant à un ami) [Thinking of a Friend] by 蘇思棣 (Sou Si-tai) is Andante (at a walking pace), since this song has a tempo of 99 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.
B Major is the music key of this track. This also means that this song has a camelot key of 1B. So, the perfect camelot match for 1B would be either 1B or 2A. While, 2B can give you a low energy boost. For moderate energy boost, you would use 10B and a high energy boost can either be 3B or 8B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 1A or 12B will give you a low energy drop, 4B would be a moderate one, and 11B or 6B would be a high energy drop. Lastly, 10A allows you to change the mood.