"In a Model Room" was produced by Masahide Sakuma, keyboardist of the new wave band Plastics with studio experience from being in the progressive rock band , who agreed to do so on the strength of the album's first track. Described by Hirasawa as "an honest man who acted with a life-sized air of cleanliness", Sakuma was swiftly trusted by the band, who were cautious with making their debut. Producing for the first time outside of his band, Sakuma went on to become a renowned session producer.