Composer John O'Brien dies

John O'Brien, a composer and music supervisor for film and TV who provided material for "Iron Guy" and it is follow up, "Pineapple Express," "Four Christmases" and "Couples Retreat," was discovered accurate Saturday inside a Chicago accommodation by film producer and former child actor Peter Billingsley. He was 45.Billingsley discovered O'Brien in the room in the Millennium Knickerbocker Hotel in downtown Chicago. An autopsy was not yet proven, but toxicological research is pending, and suspected drugs and sleeping pills were based in the room, based on the Chicago Tribune.O'Brien labored with Billingsley and actor-director Jon Favreau on numerous films starting with "Made" in 2001, 2006's "The Break-Up," 2008's "Four Christmases" both "Iron Guy" photos and "Couples Retreat."O'Brien gained his first screen credits on 1997 film "Nightwatch" and 1999's "Anywhere but Here."He also labored in TV, serving as music supervisor on ABC's brief David Arquette series "Just In Case of Emergency" in 2007 and creating the theme music for last season's "Detroit 1-8-7."O'Brien most lately labored as music supervisor about the Will Arnett-Christina Applegate sitcom "Up Through The Night," which NBC will premiere Sept. 14. Contact Variety Staff at news@variety.com