one could not be found that could hit all the necessary notes. Alf Clausen, who has scored most of the Simpsons music, began his work on the show with this episode. The first segment, "Bad Dream House", was written by John Swartzwelder and directed by Wes Archer. The voice of the house was provided by cast member Harry Shearer. Jay Kogen and Wallace Wolodarsky wrote the second segment, "Hungry are the Damned", and Rich Moore directed it. Sam Simon wrote the third segment, "The Raven", and David Silverman directed it. The segment was based on Edgar Allan Poe's 1845 narrative poem "The Raven". During production, Simpsons creator Matt Groening was nervous about "The Raven" because it did not have many gags, and felt it would be "the worst, most pretentious thing [they had] ever done" on the show. American actor James Earl Jones guest starred in the episode as a moving man, Serak the Preparer (one of the aliens) and the narrator of "The Raven". Unable to work with the rest of the cast, Jones recorded his lines at the Village Recorder in West Los Angeles; he chewed on a cookie close to his microphone to perform drooling sounds for the aliens. The sibling aliens Kang and Kodos first appeared on the show on this episode. Every Treehouse of Horror episode since this one must have Kang and Kodos as characters, states an unofficial Simpsons rule. Despite this rule, the writers say the duo will often be forgotten and then added at the last second, leading to brief appearances. The idea of Kang and Kodos came from Kogen and Wolodarsky. In the script, Kang and Kodos were shown as "an octopus in a space helmet with a trail of goo". The finished design was based on the cover of an EC Comics issue. Although originally designed to constantly drool, Groening suggested that they not drool all the time to make the animation process easier. However, the animators did not mind the work, leading to the drooling staying in the script. Kang and Kodos's names are derived from two Star Trek characters. Kang was a Klingon captain portrayed by actor Michael Ansara in the episode "Day of the Dove", whereas Kodos the Executioner was a human villain from "The Conscience of the King". Harry Shearer voices Kang, and Dan Castellaneta voices Kodos. A third alien named Serak the Preparer also made