Toronto-based composer Mark Korven, best known for his work on The Witch, The Lighthouse and The Black Phone, talks about crafting the score for his most recent horror project, The First Omen – a prequel to the 1976 film, The Omen. He explains how he created an original score while paying homage to Ave Satani from the ‘76 film, and how he used a unique instrument of his own design named The Apprehension Engine.