15. When darkly looms the day

15. When darkly looms the day is a somber song by Arthur Sullivan with a tempo of 94 BPM. It can also be used double-time at 188 BPM. The track runs 19 minutes and 6 seconds long with a A♯/B♭ key and a major mode. It has low energy and is somewhat danceable with a time signature of 4 beats per bar .