Who Cares 胡凱兒, 康書晴 made "昨天" available on December 5, 2018. With this song being about 5 minutes long, at 5:28, "昨天" by Who Cares 胡凱兒, 康書晴 is fairly a long song compared to the average song length. This song does not have an "Explicit" tag, making it safe for all ages. There is only one song in 昨天, so we believe that "昨天" is a single. In terms of popularity, 昨天 is currently below average in popularity. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

昨天 テンポ

The tempo marking of 昨天 by Who Cares 胡凱兒, 康書晴 is Andante (at a walking pace), since this song has a tempo of 108 テンポ. With that information, we can conclude that the song has a moderate tempo. The time signature for this track is 4/4.

昨天 キー

The music key of this track is B Major. 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.