Undertone is an upcoming psychological horror film that transforms sound itself into something deeply unsettling. Built around a mysterious audio phenomenon, the story follows a group of characters who uncover a series of strange frequencies capable of triggering disturbing visions and violent psychological effects. What begins as an experiment in curiosity quickly escalates into obsession, paranoia, and an inescapable descent into terror.Rather than leaning on traditional jump scares, Undertone thrives on slow-burn tension and oppressive atmosphere. The film uses silence, distorted audio, and subtle sound design to create a creeping sense of dread, reminding viewers that horror doesn’t always need…