Takefumi Haketa's '楽しいデートのワルツ' came out on March 22, 2017. With 楽しいデートのワルツ being less than two minutes long, at 1:09, 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 映画「ひるなかの流星」オリジナルサウンドトラック, so we believe that "楽しいデートのワルツ" is a single. In terms of popularity, 楽しいデートのワルツ is currently unknown. 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 楽しいデートのワルツ by Takefumi Haketa is Andante (at a walking pace), since this song has a tempo of 97 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 4/4.
This song has a musical key of D Major. This also means that this song has a camelot key of 10B. So, the perfect camelot match for 10B would be either 10B or 11A. While, 11B can give you a low energy boost. For moderate energy boost, you would use 7B and a high energy boost can either be 12B or 5B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 10A or 9B will give you a low energy drop, 1B would be a moderate one, and 8B or 3B would be a high energy drop. Lastly, 7A allows you to change the mood.