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Photos: Ozzy Osbourne through the years
Source: 2013: Geezer Butler, Tony Iommi and Ozzy Osbourne of Black Sabbath win the Event of the Year, Album of the Year 2013 and Living Legends Awards the Classic Rock Roll of Honour at the Roundhouse on November 14, 2013, in London.

When Black Sabbath released “Iron Man” in 1970, they created one of heavy metal’s most recognizable songs almost by accident. The track appeared on the band’s second album, Paranoid, which would become one of the most influential records in rock history. With its massive guitar riff, ominous atmosphere, and Ozzy Osbourne’s unmistakable vocals, “Iron Man” helped define the sound that would come to be known as heavy metal.

The song’s origins go back to a rehearsal session at Regent Sound Studios in London. Guitarist Tony Iommi came up with the now-famous opening riff while the band was working on new material. According to the band, Ozzy Osbourne heard Iommi’s guitar part and said it sounded like an “iron man” walking. Bassist and lyricist Geezer Butler took that phrase and developed it into a science-fiction-inspired story.

The lyrics tell the story of a man who travels into the future and witnesses an apocalyptic event. When he returns to the present to warn humanity, people ridicule and reject him. In a cruel twist, he eventually becomes the very force responsible for destroying the world he tried to save. Butler’s lyrics gave the song a dark, futuristic quality that fit perfectly with Black Sabbath’s heavy sound.

One of the song’s most famous moments is Ozzy’s opening vocal, which sounds almost like a growled announcement. The title “Iron Man” was never meant to refer directly to the Marvel superhero, although the song later became strongly associated with the character. Decades after its release, the riff was featured prominently in the 2008 Iron Man movie, introducing the song to a new generation.

“Iron Man” remains a defining Black Sabbath recording and a perfect example of how the band combined heavy riffs, dark storytelling, and a little bit of imagination to create something that still sounds enormous more than 50 years later.