Mission: Impossible has one of the most recognisable themes in film. Used in the original 1966 TV series, the reboot 1980 series and all 6 feature films, the evolving style of the theme tune has helped define a franchise. Your mission, should you choose to accept it, is to read along as I explore how the theme tune and the music of the franchise has been adapted over time, and see how those changes reflect each of the films.