安野希世乃's '嘆きの空' came out on November 7, 2018. Since 嘆きの空 is still less than 10 minute long, it is still considered a pretty long duration song compared to the average song length. This song does not appear to be explicit due to the lack of the "E" tag. There is only one song in 笑顔。, so we believe that "嘆きの空" is a single. Based on our statistics, 嘆きの空's popularity 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 嘆きの空 by 安野希世乃 is Allegro (fast, quick, and bright), since this song has a tempo of 148 テンポ. With that information, we can conclude that the song has a fast tempo. This song can go great with jogging or cycling. The time signature for this track is 4/4.
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.