理想混蛋's '我反芻著你留下的寂寞' came out on April 21, 2022. With this song being around four minutes long, at 4:15, the duration of this song is pretty average compared to other songs. This track is safe for children and doesn't appear to contain any foul language, since the "Explicit" tag was not present in this track. There is only one song in 關掉 / 打開, so we believe that "我反芻著你留下的寂寞" is a single. In terms of popularity, 我反芻著你留下的寂寞 is currently average in popularity. 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 我反芻著你留下的寂寞 by 理想混蛋 is Andante (at a walking pace), since this song has a tempo of 103 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.
B♭ Minor is the music key of this track. Because this track belongs in the B♭ Minor key, the camelot key is 3A. So, the perfect camelot match for 3A would be either 3A or 2B. While, a low energy boost can consist of either 3B or 4A. For moderate energy boost, you would use 12A and a high energy boost can either be 5A or 10A. However, if you are looking for a low energy drop, finding a song with a camelot key of 2A would be a great choice. Where 6A would give you a moderate drop, and 1A or 8A would be a high energy drop. Lastly, 6B allows you to change the mood.