Get ready to feel very emotional with "Henry Purcell's King Arthur, or The British Worthy (Z. 628): Act III - The Frost Scene, 20."What Power art thou, who from below..."" by The Somnambulist. With a 73 BPM and 4 time signature, the rhythms flow in D minor. Spanning 4 minutes and 33 seconds, "Henry Purcell's King Arthur, or The British Worthy (Z. 628): Act III - The Frost Scene, 20."What Power art thou, who from below..."" radiates low energy from start to finish. Let the very emotional vibes of this track carry you away.