"Master of the Universe" was written by Brock and Turner (who sings the lead vocal), although Anderson contends that he should also have received a writer's credit for writing the main riff. It is the only track on the album that could be interpreted as lyrically having a space theme, but may also be viewed as being anthropocentric. This was also part of the "Sounds of the Seventies" session and quickly became a live favourite and almost ever present in the set, appearing on numerous live albums. The track was used by the Ford Motor company to advertise the Ford B-Max on television in 2012.