furmoph, Kagamine Rin's ' "undersurface - Album Ver. (feat. 鏡音リン)" was released on its scheduled release date, December 26, 2025. With this song being around four minutes long, at 4:00, 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. The track order of this song in furmoph, Kagamine Rin, Kagamine Len's "IMMATURE" album is number 5 out of 11. On top of that, Japan appears to be the country where this track was created. In terms of popularity, undersurface - Album Ver. (feat. 鏡音リン) is currently not that popular. Based on the vibe, this track doesn't seem to be that danceable, however its valence properties can make this some somewhat danceable.
We consider the tempo marking of undersurface - Album Ver. (feat. 鏡音リン) by furmoph, Kagamine Rin to be Moderato (at a moderate speed) because the track has a tempo of 112 BPM, a half-time of 56BPM, and a double-time of 224 BPM. Based on that, the speed of the song's tempo is moderate. The time signature for this track is 4/4.
E♭ Major is the music key of this track. This also means that this song has a camelot key of 5B. So, the perfect camelot match for 5B would be either 5B or 6A. While, 6B can give you a low energy boost. For moderate energy boost, you would use 2B and a high energy boost can either be 7B or 12B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 5A or 4B will give you a low energy drop, 8B would be a moderate one, and 3B or 10B would be a high energy drop. Lastly, 2A allows you to change the mood.
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