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Sean McMahon is best know for his score to “The Grudge III,” produced by “Spider-Man 3” director, Sam Raimi, and “400 Days,” written and directed by rising star, Matt Osterman, that starred Dane Cook, Brandon Routh (“Superman Returns”), Caity Lotz (Arrow), Ben Feldman (Mad Men) and Tom Cavanaugh (“The Flash”).

McMahon hails from Toronto, Canada, and holds a Bachelor’s degree in Film Scoring from Berklee College of Music. He has also completed the University of Southern California’s (USC) Scoring for Motion Pictures and Television program in Los Angeles.

After his studies at USC, McMahon remained in Los Angeles to work for veteran Hollywood film composer and Golden Globe nominee, Christopher Young (“The Shipping News,” “Swordfish,” “Runaway Jury”). McMahon assisted Young in several roles including project manager and lead orchestrator. Their work together includes such films as “Spider-Man 3,” “The Grudge,” “Ghost Rider,” “Tyler Perry’s A Madea Christmas,” and dozens more. He has also orchestrated for Oscar-winner, John Ottman, on films such as “Fantastic Four: Rise of the Silver Surfer” and “The Invasion.” Additionally, McMahon has written additional music for Sony/Columbia, 20th Century FOX, and Dreamworks pictures.








He has scored a number of video games such as "Jump Dewds!" and "Strata" (published on Steam) for game developer Graveck Interactive, based out of Minneapolis, Minnesota.

McMahon has been commissioned twice by the American Composers Forum to speak at national composer conferences on Hollywood film music and video game music. In 2013 McMahon shared the stage with game composing titans Lennie Moore ("Halo: The Master Chief Collection," "Star Wars: The Old Republic," "Lord of the Rings: The War of the Ring") and Jason Graves (“Dead Space,” “Tomb Raider”) for a game music conference called “Game On!”

In addition, McMahon also teaches film scoring to the next generation of composers at Berklee College of Music in Boston, Massachusetts. He resides in Brookline, Massachusetts with his wife and two daughters while remaining active in Hollywood film music.