Composer in TV and films since 1990s. In 2007, John was nominated for a Primetime Emmy Award "Outstanding Music Composition for a Series (Original Dramatic Score)" for CSI: Crime Scene Investigation for the episode Law of Gravity.
As a child, 12-year-old John and his 13-year-old brother Tom co-starred in the CBS summer variety series The Keane Brothers Show in 1977.
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