Members of Moss Icon, Universal Order of Armageddon, Born Against, the Great Unravelling and others comprise The Convocation Of… On their second release, The Convocation Of… are more of a sludgy, art-damaged, acid metal band than hardcore. “Pyramid Technology” is heavy and intricate without weighing you down in proggish virtuoso showmanship or boring you to death with routine riffage. Plenty of Zeppelin and Sabbath sounds as well as Unwound and Polvo, but not too much of any of those bands in particular. Heavily reminiscent of the late, great T Tauri. Fans of Corrugated, have a listen.