Many fans were upset when Hanz Zimmer was chosen to compose The Simpsons Movie instead of Clausen.
Clausen has scored music in more than 30 films and television shows.
Clausen has been the sole composer of The Simpsons since 1992.
In 2005, Alf and his jazz orchestra unveiled their CD entitled, "Swing Can Really Hang You Up The Most." It was released on Sunny NoDak Records.
Clausen: Welcome to the 400th episode of The Simpsons, a watershed moment. It's been an amazing ride and I have all of you to thank for the success of it. You're responsible for the success of this whole run. It's a great team effort, and it's not over yet - we should make some music, I guess!
Clausen: On July 20, 2006, I had the pleasure of conducting the 85-member Henry Mancini Institute Orchestra in a reading session of Simpsons music. I worked with the orchestra members at UCLA's Shoenberg Hall, leading them in a sight-reading session, taking time out to talk about the motivations behind the songs and scores, playing my own Simpsons orchestra recordings, and discussing my life as a composer in Hollywood. My musicians' contractor, Murray Adler, also shared with the orchestra members a multitude of his career experiences, giving them invaluable "tips of the trade" about how to become a successful studio musician. It was a wonderful night of music and camaraderie for all involved.