李志 made "忽然" available on 2010. The duration of 忽然 is about two minutes long, specifically at 2:06. This song does not appear to have any foul language. 忽然's duration is considered a little bit shorter than the average duration of a typical track. There is only one song in 你好,鄭州, so we believe that "忽然" is a single. Based on our statistics, 忽然's popularity is below average in popularity right now. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.

忽然 テンポ

The tempo marking of 忽然 by 李志 is Allegro (fast, quick, and bright), since this song has a tempo of 154 テンポ. With that information, we can conclude that the song has a fast tempo. This song can go great with running. The time signature for this track is 4/4.

忽然 キー

D♭ Major is the music key of this track. This also means that this song has a camelot key of 3B. So, the perfect camelot match for 3B would be either 3B or 4A. While, 4B can give you a low energy boost. For moderate energy boost, you would use 12B and a high energy boost can either be 5B or 10B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 3A or 2B will give you a low energy drop, 6B would be a moderate one, and 1B or 8B would be a high energy drop. Lastly, 12A allows you to change the mood.