Subtitled ""Music to an Interior Film"", "Perdition City", and companion EP’s "Silence Teaches You How to Sing" and "Silencing the Singing", represent the transition to the band's work in film scores, largely inspired by the results of electronic programming and digital sound manipulation they had experimented with during the recording of "Themes from William Blake's The Marriage of Heaven and Hell". In response to the subtitle, Rygg adds, "We mean just what we say, an abstract "inner movie". It wouldn't be wise to comment on anything afterwards in case there would be a hidden message." Leonards Lair state that "Perdition City" is “much more than background music, which is capable of adding atmosphere to a film, but taken out of context as a standalone piece is ultimately worthless. This music is too obtrusive, and to be frank, too good for a soundtrack.“