Michiru made "あれ?" available on December 25, 2019. With あれ? being less than two minutes long, at 1:43, 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 are a total of 28 in the song's album "TVアニメ「本好きの下剋上 司書になるためには手段を選んでいられません」ORIGINAL SOUNDTRACK". In this album, this song's track order is #12. In terms of popularity, あれ? is currently not that popular. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

あれ? テンポ

With あれ? by Michiru having a テンポ of 109 with a half-time of 54 テンポ and a double-time of 218 テンポ, we would consider this track to have a Moderato (at a moderate speed) tempo marking. Because of this, we believe that the song has an overall moderate tempo. The time signature for this track is 4/4.

あれ? キー

This song is in the music key of G Major. Or for those who are familiar with the camelot wheel, this song has a camelot key of 9B. So, the perfect camelot match for 9B would be either 9B or 10A. While, 10B can give you a low energy boost. For moderate energy boost, you would use 6B and a high energy boost can either be 11B or 4B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 9A or 8B will give you a low energy drop, 12B would be a moderate one, and 7B or 2B would be a high energy drop. Lastly, 6A allows you to change the mood.