Imagine if two of the greatest voices in rock history had joined forces—what if Robert Plant had lent his legendary vocals to a Tony Iommi project? It’s a collaboration that’s been tantalizingly close yet frustratingly out of reach for decades. And this is the part most people miss: despite their bands’ parallel legacies, Iommi and Plant’s paths have crossed more often than you’d think, though never in the studio. But here’s where it gets controversial: could their missed opportunity be a blessing in disguise, or the greatest ‘what if’ in rock history?
Back in 2000, Black Sabbath’s iconic guitarist Tony Iommi released his first solo album, aptly titled IOMMI. Five years in the making, the record was a star-studded affair, featuring younger musicians like Billy Corgan, Dave Grohl, and Serj Tankian, all of whom had grown up idolizing his work. While the album was ambitious—perhaps too much so, with multiple songwriters in the mix—it was a solid effort. Yet, it peaked at a disappointing #129 on the US Billboard chart. But here’s the kicker: Iommi turned down collaborations with Eminem and Kid Rock, admitting later, ‘Who the bloody hell is Eminem?’ A missed opportunity? Absolutely. But as Iommi reflected 20 years later, ‘I hadn’t the faintest idea’ they’d become superstars.
Despite these oversights, Iommi has always been open to working with his admirers. However, there’s one collaboration that’s eluded him—Robert Plant. When you’ve shared a stage with Ozzy Osbourne, Ronnie James Dio, and Ian Gillan, Plant is arguably the final frontier. ‘I’d tried to do [a project] before with Planty and a few others,’ Iommi revealed in 2020, ‘but it was so hard because of management and all that.’
Led Zeppelin and Black Sabbath are often seen as the twin pillars of hard rock and metal, yet their stories rarely intersected in the 1970s. Still, Iommi insists the bands were friendly. ‘Black Sabbath used to jam with Led Zeppelin all the time,’ he recalled. ‘We’d be rehearsing, and they’d come interrupt us. I’ve got some tapes floating around the house.’ One memorable jam session? When John Bonham, Plant, and John Paul Jones crashed a Sabbath recording session in London, begging to play ‘Supernaut.’ Bonham’s drumming was off, but the energy was electric.
Iommi’s admiration for Plant never waned. In 2025, he personally invited Plant to perform at Black Sabbath’s farewell concert in Birmingham. Plant declined, explaining to Mojo magazine, ‘I just can’t. I don’t know anything about what’s going on in that world now.’ Is this the end of the Iommi-Plant dream team? Or could Tony’s willingness to adapt—say, to Plant’s country-folk vibe—revive the possibility?
What do you think? Is the Iommi-Plant collaboration a missed opportunity, or would it have been a mismatch? And if it’s not too late, what would it take to make this rock legend pairing a reality? Let us know in the comments!
