Over 80 hours were spent mixing and recording sound for the 9 1/2 minute cartoon.
Like Don Hertzfeldt's other animated films, no computers were used in the production. All of the film's special effects were photographed traditionally and in-camera.
Don Hertzfeldt almost never uses a script during production and prefers to improvise and shape a film "as it goes along". This was no different, and much of post-production was spent radically retooling the entire piece through sound and editing. Some of the film's dialogue wasn't even written until after the film was animated and photographed, to allow for fresh improvisation and experiments.
(at around 5 mins) The song that the Fluffy Guys are dancing to is a Swedish Christmas song.