The Iconic 5/4 Time Signature
Behind the Tune: Meaning & Story
The Mission: Impossible TV Theme Tune is one of the most famous pieces of television music in history. Composed by the legendary Lalo Schifrin, the theme debuted on September 17, 1966, alongside the premiere of the spy thriller series on CBS.
The show follows the high-stakes adventures of the Impossible Missions Force (IMF), and Schifrin’s score perfectly captures that intensity. Its distinctive, driving melody—famously written in a 5/4 time signature—was designed to sound like “Morse Code” according to the composer. Over seven seasons and 171 episodes, the music became inseparable from the image of a burning fuse.
While the series ended its original run in 1973, the theme has remained a cultural powerhouse, used in every subsequent film and spin-off. Its enduring popularity solidifies its place as an unforgettable symbol of clever tactics, daring missions, and the timeless appeal of the spy genre.
