梶浦 由記 made "a small happy ending" available on September 4, 2019. With a small happy ending being less than two minutes long, at 1:54, 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 ロード・エルメロイⅡ世の事件簿 -魔眼蒐集列車 Grace note- Original Soundtrack, so we believe that "a small happy ending" is a single. The popularity of a small happy ending is currently not that popular right now. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

a small happy ending テンポ

The tempo marking of a small happy ending by 梶浦 由記 is Vivace (lively and fast), since this song has a tempo of 160 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.

a small happy ending キー

B Minor is the music key of this track. This also means that this song has a camelot key of 10A. So, the perfect camelot match for 10A would be either 10A or 9B. While, a low energy boost can consist of either 10B or 11A. For moderate energy boost, you would use 7A and a high energy boost can either be 12A or 5A. However, if you are looking for a low energy drop, finding a song with a camelot key of 9A would be a great choice. Where 1A would give you a moderate drop, and 8A or 3A would be a high energy drop. Lastly, 1B allows you to change the mood.