The Mission Impossible theme was composed by Lalo Schifrin for the original 1966 television series, built around an unusual five-beat rhythm that made it instantly distinctive. It returned with the Tom Cruise film series beginning in 1996, where new arrangements kept the same melody at the centre of trailers, opening titles and action scenes. Over time the tune moved beyond the screen into ringtones, sports entrances and online videos, where a few seconds are enough to suggest a secret operation. Its staying power comes from that instant association with daring missions and high stakes.