dun dun dun

Etymology
An representation of a three-note dramatic, probably the seventh to ninth notes (E♭-C-F♯) from the start of the theme music of the American police procedural television series Dragnet (first broadcast 1967–1970), which was used for dramatic effect during various episodes. The tune, originally simply called “Main Title” and later “Danger Ahead”, was composed by the American composer (1913–1958), based on the beginning of the theme music of the film The Killers (1946) by the Hungarian-American composer  (1907–1995).

Translations

 * Finnish: tan-tan-tan
 * Macedonian: тан-тан-тан