Thunderstruck is a 1990 song by Australian hard rock band AC/DC, released as the opening track of their album The Razors Edge. Its signature guitar intro, played by Angus Young, became one of the band's most recognisable hooks and a staple of their live shows, where crowds often chant along with the riff. Over time the short opening became a shorthand for high-energy entrances in sports arenas, films and online videos, and editors now use just those first seconds to signal that something big is about to happen.