Black Sabbath released Iron Man in 1970 on their second album, Paranoid, and it became one of the band's most enduring songs. Built around a simple but unforgettable guitar riff, it helped define early heavy metal and has since appeared in films, trailers, sports broadcasts and countless online edits. Its title also links it in listeners' minds with the Marvel superhero, which keeps the short opening instantly recognisable to new audiences discovering the track through memes and video edits today.