Opt's ' "Ruby" was released on its scheduled release date, April 10, 2021. The duration of This song is about two minutes long, specifically at 2:21. This song does not appear to have any foul language. Ruby's duration is considered a little bit shorter than the average duration of a typical track. There is only one song in 夜に生まれたピアノ曲集, so we believe that "Ruby" is a single. Ruby is unknown right now. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.
The tempo marking of Ruby by Opt is Andante (at a walking pace), since this song has a tempo of 79 BPM. 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 A Minor. Because this track belongs in the A Minor key, the camelot key is 8A. So, the perfect camelot match for 8A would be either 8A or 7B. While, a low energy boost can consist of either 8B or 9A. For moderate energy boost, you would use 5A and a high energy boost can either be 10A or 3A. However, if you are looking for a low energy drop, finding a song with a camelot key of 7A would be a great choice. Where 11A would give you a moderate drop, and 6A or 1A would be a high energy drop. Lastly, 11B allows you to change the mood.
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