As a post-production vagabond, John has worked at Zoetrope Studios, Lucasfilm, The Saul Zaentz Film Company, KQED, KRON, as well as a variety of independent production companies. As a sound supervisor and sound editor he has worked on more than eighty feature films; directly and creatively involved with: Francis Coppola (Jack, Apocalypse Now), Milos Forman (Amadeus), Carroll Ballard (The Black Stallion), David Lynch (Blue Velvet, Twin Peaks, Wild at Heart), Keith Gordon (Midnight Clear, Waking the Dead, The Singing Detective), Wes Anderson (Rushmore), John Waters (Serial Mom, Pecker, Cecil B. Demented), Tim Burton (Ed Wood), Phil Kaufman (The Body Snatchers), Rob Cohen (Dragon: The Bruce Lee Story, Skulls), Robert Duvall (Apostle), Sean Penn (The Pledge), Walter Salles (Exposure) and many others. He is a member of the Academy of Motion Picture Arts and Sciences (AMPAS). For his work supervising sound on Amadeus he was awarded a BAFTA Award, the British equivalent of an Oscar.