Opposites attract in this unexpected collaboration between dubstep pioneer Sam Shackleton and out-folk innovator Ben Chasny of Six Organs of Admittance. Yet the oddity itself is very beautiful. Shackleton’s music has never sounded so warm and present. Chasny’s work has never seemed visionary and forward looking. They meet somehow in a middle that no one foresaw, and it is a strange and lovely place.