"Lunar City Seven" is a song sung and hummed by Dave Lister, particularly in Series I. In the realm of the first novel, it is taken from African ballad-singer Perry N'Kwomo's album Nice 'n' Nauseating. Dave Lister's frequent singing of it may suggest that he had visited the Moon at some point. In the TV series, the first scene of the pilot episode opens with Lister singing it on Z Shift and Arnold Rimmer getting annoyed with it. Lister sings it numerous times, such as while shaving in "Future Echoes" for which he is criticized by Talkie Toaster. It is hummed by Rimmer and Lister in "Me²".