We shouldn't have been surprised to be surprised by Liturgy. The "transcendental black-metal" duo creates massive, hypnotic sheets of sound informed by classical music as well as early black metal. We assumed that would mean the loudest Undercover yet, but Hunter Hunt-Hendrix informed us upon arrival that he wanted to perform Shellac's unstoppable "Prayer To God" a cappella. As you'll see, he builds the song up from scratch with vocal loops, creating something absolutely hypnotic. (And Shellac fans who were worried that a band would come in without an appreciation for the original shouldn't have been: Hunt-Hendrix says it's one of his favorite songs.) For some insight into Hunt-Hendrix's philosophy of metal, click to read his manifesto (of sorts). Or just check out Liturgy's Aesthetica, which came out last year on Thrill Jockey, or see the band live at the following shows, many of which double as Thrill Jockey anniversary concerts. Take a deep breath and enjoy.