"Treehouse of Horror" is the third episode of "The Simpsons"' which number season, and is the first episode to have the music composed by Alf Clausen, an American film and television composer?
Alf Clausen Alf Heiberg Clausen (born March 28, 1941) is an American film and television composer. He is best known for his work scoring many episodes of "The Simpsons", of which he had been the sole composer between 1990 and 2017. Clausen has scored or orchestrated music for more than 30 films and television shows, including "Moonlighting", "The Naked Gun", "ALF" and "Ferris Bueller's Day Off".
Eureka (soundtrack) Eureka: Original Soundtrack From the Sci-Fi Channel Television Series is a soundtrack album released on August 26, 2008, containing incidental music composed primarily by Bear McCreary and used in the second season of the Syfy original series, "Eureka".