YJKL made "Postcards" available on March 9, 2020. With Postcards being less than two minutes long, at 1:45, 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. Since Postcards only contains only one song in the album, we like to consider this song as a single. The popularity of Postcards is currently 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.

Postcards テンポ

With Postcards by YJKL having a テンポ of 174 with a half-time of 87 テンポ and a double-time of 348 テンポ, we would consider this track to have a Vivace (lively and fast) tempo marking. Because of this, we believe that the song has an overall fast tempo. The time signature for this track is 4/4.

Postcards キー

The music key of this track is B♭ Major. Or for those who are familiar with the camelot wheel, this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.