"昨日の話" by 夜に駆ける was released on February 7, 2021. With 昨日の話 being less than two minutes long, at 1:49, we are fairly confident that this song is not explicit and is safe for all ages. Based on the duration of this song, this song duration is much smaller than the average song duration. There is only one song in 僕らいつか化石になる, so we believe that "昨日の話" is a single. 昨日の話 is 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.
The tempo marking of 昨日の話 by 夜に駆ける is Adagio (slowly with great expression), since this song has a tempo of 71 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 3/4.
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.