12 Monkeys (1995)

Bruce Willis stars as a convict who is sent back in time to prevent a deadly virus outbreak in a post-apocalyptic world. He meets a radical activist, and a psychiatrist, played by Brad Pitt and Madeleine Stowe. The film's score, composed and arranged by Paul Buckmaster, features a mesmerizing main theme based on an Argentine tango by composer Astor Piazzolla, adding to the film's haunting atmosphere and sense of impending doom.