Inventively blending jungle and drum'n'bass elements with a broader, imposing industrial and metallic music aesthetic, the supergroup The Blood Of Heroes – which counts Godflesh's Justin Broadrick, Mick Harris (Scorn), Submerged, and Enduser among its members – completes a triptych of albums with its third record, "Nine Cities," arriving over a decade after its predecessor, "The Waking Nightmare."