Kyohei Ozawa made "Hot Summer Day" available on August 22, 2018. With Hot Summer Day being less than two minutes long, at 1:29, 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 「マギアレコード 魔法少女まどか☆マギカ外伝」 Music Collection, so we believe that "Hot Summer Day" is a single. In terms of popularity, Hot Summer Day is currently not that popular. The overall mood can be danceable to some, especially with it's high amount of postive energy.
The tempo marking of Hot Summer Day by Kyohei Ozawa is Moderato (at a moderate speed), since this song has a tempo of 112 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.
This song is in the music key of C Major. This also means that this song has a camelot key of 8B. So, the perfect camelot match for 8B would be either 8B or 9A. While, 9B can give you a low energy boost. For moderate energy boost, you would use 5B and a high energy boost can either be 10B or 3B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 8A or 7B will give you a low energy drop, 11B would be a moderate one, and 6B or 1B would be a high energy drop. Lastly, 5A allows you to change the mood.