According to Parker, he was approached by the film's producers to create a theme song for the film. Unfortunately, he only had a few days to do so and the film's title seemed impossible to include in any lyrics. However, when watching television late at night, Parker saw a cheap commercial for a local service that reminded him that the film had a similar commercial featured for the fictional business. This inspired him to write the song as a pseudo-advertising jingle that the business could have commissioned as a promotion.
Parker was later the defendant in a copyright infringement lawsuit which claimed "Ghostbusters" was too similar in musical structure to "I Want a New Drug", written and performed by Huey Lewis and the News (more specifically, the guitar riff which runs through the song). "I Want a New Drug" was a U.S. top-ten hit earlier the same year. The two parties settled out of court. Details... Read More