Bivattchee made "なんだろう" available on April 11, 2002. The duration of なんだろう is about 3 minutes long, at 3:27. Based on our data, "なんだろう" appears to be safe for all ages and is not considered explicit. This track is about the average length of a typical track. There is only one song in 青いカラス, so we believe that "なんだろう" is a single. Based on our statistics, なんだろう's popularity is unknown right now. Based on the vibe, this track doesn't seem to be that danceable, however its valence properties can make this some somewhat danceable.

なんだろう テンポ

The tempo marking of なんだろう by Bivattchee is Allegro (fast, quick, and bright), since this song has a tempo of 156 テンポ. With that information, we can conclude that the song has a fast tempo. This song can go great with running. The time signature for this track is 4/4.

なんだろう キー

C Major is the music key of this track. 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.