Over its first three albums (if you include the "remix" disc Disguised Masters), Arcturus established a pattern of radically changing its sound each time, a trend that continues with The Sham Mirrors, the band's third "official" studio album. The constant thread throughout all the group's work, and again here, comes from keyboardist/songwriter Steiner "Sverd" Johnsen, whose sinister, often carnival-esque harmonies and dramatic synth arrangements have a pretty clear stamp by now.