For many years, the Pittsburgh duo Zombi has been making dank, atmospheric instrumental music that’s heavily indebted to the bugged-out horror-film scores of the ’70s and ’80s. Within that zone, Zombi have always found plenty of room for creative expression; their 2021 EP Liquid Crystal was full of different wrinkles on the group’s established sound. But on a new album, Zombi have gone off in a vastly different direction.