Composed by Lalo Schifrin for the original Mission Impossible television series that began in 1966, the theme became one of the most recognisable pieces of television music ever written. Its unusual five-beat rhythm helped it stand out instantly, and later film adaptations carried the melody to a new generation of viewers. Online, the short opening has been reused countless times in memes, edits and reaction videos because it instantly frames any task as a covert operation, keeping the theme familiar even to people who have never watched the original show.