まるり's ' "Blue Knock" was released on its scheduled release date, September 25, 2025. With this song being around four minutes long, at 3:32, 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. Because this song is the only song in Blue Knock and no other songs are present in the album, we classify this track as a single. The popularity of Blue Knock is currently not that popular right now. The overall mood can be danceable to some, especially with it's high amount of postive energy.
The tempo marking of Blue Knock by まるり is Vivace (lively and fast), since this song has a tempo of 170 BPM. With that information, we can conclude that the song has a fast tempo. The time signature for this track is 4/4.
F♯ Major is the music key of this track. This also means that this song has a camelot key of 2B. So, the perfect camelot match for 2B would be either 2B or 3A. While, 3B can give you a low energy boost. For moderate energy boost, you would use 11B and a high energy boost can either be 4B or 9B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 2A or 1B will give you a low energy drop, 5B would be a moderate one, and 12B or 7B would be a high energy drop. Lastly, 11A allows you to change the mood.
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