 Two of the shows writers, David Fury (I) (qv) and  Marti Noxon (qv), have small singing parts. Fury can be seen  singing "They Got the Mustard Out" outside the magic shop when Buffy  checks to see if other people are singing. Noxon sings about a  parking ticket ("I think that hydrant wasnt there") while Giles,  Xander, and Anya are walking on the street after Xander and Anyas  duet.