Buts, Jeroen. "5.1". The Thematical and Stylistic Evolution of Heavy Metal Lyrics and Imagery From the 70s to Present Day. pp. 82-83. "Isis's lyrics for example centred such concepts as that of the mosquito swarm on their entire first album 'Mosquito Control', a theme which they would refer to very subtly in future lyrics, visual art, and titles by using words such as 'swarm', 'sting', 'hive' or 'cocoon' and images of mosquito's [sic]. Examples are 'Collapse and Crush', 'Swarm Reigns (Down)' and 'Gentle Time' on their album 'Celestial', which also added imagery of signals and signalling communication towers."