Alf Clausen, the composer best known for his 27 year stint on The Simpsons has died aged 84. The film composer passed away on Thursday at his Valley Village home in Los Angeles after a battle with a rare illness.

Alf Clausen, the Emmy Award-winning composer of "The Simpsons," has died at age 84, his daughter told The Hollywood Reporter.

Alf Clausen, the Emmy-winning composer whose music provided essential accompaniment for the animated antics of The Simpsons for 27 years, has died. His daughter Kaarin Clausen told The Associated Press that Alf Clausen died Thursday (May 29) at his home in Los Angeles after struggling with Parkinson's disease for about a decade.