Michigan’s King 810 has been refining and defining its hard heavy loud sound since its 2014 Memoirs Of A Murderer debut. David Gunn and Eugene Gill have used various musicians in the decade since. The new Under The Black Rainbow is actually a soundtrack to an occult film they funded, wrote, directed, produced, filmed, acted, edited and distributed. John Schroeder—who produced last year’s Follow My Tears—is back twiddling knobs again. Opening bands on August 9 at Dingbatz in Clifton will be The Last 10 Seconds of Life plus Extortionist.