With the recent announcement that Plant will be performing at this year’s highly anticipated Glastonbury festival along with bluegrass star Aison Krauss, which Plant released a 12-track studio album with last year, it is clear that any issues with his vocal cords are firmly in the past. But there was a time that fans of Zeppelin worried for the star’s future in singing after he had to have surgery to remove nodules on his vocal cords. In the past, Plant revealed: “I had a lot of trouble with my voice,” which has gone on to affect huge stadium performances.

Plant recalled one story in particular where his vocal trouble was at its height. He said: “I was in Australia once, I was in Melbourne. I remember we sold out some huge stadiums.

“The stage was on wheels so if we had 10,000 people that was fine, but if it was 12,000 they could wheel the stage back with a tractor pulling in.

“As the day went on, more and more people arrived, and I couldn’t speak.