Robert Plant felt unfulfilled by the end of Led Zeppelin.

The 'Stairway to Heaven' rocker has admitted he prefers being a solo artist and says he hated living the rock' n' roll lifestyle of wild behaviour by 1980 when Led Zeppelin ended with the death of drummer John Bonham.

Robert explained: ''There was nothing cerebral about what I was doing at all. [Being the singer] is just kind of narrating some bits and pieces which gold together some great instrumentation.

''Any peripheral bull***t left me cold and still does. The band was always four guys that got together and played and when they get together it becomes a different chemical combination.''

The 64-year-old star reunited with his original bandmates - John Paul Jones and Jimmy Page, as well as Jason Bonham, son of John - for their one-off reunion concert at London's 02 Arena in 2007. Robert is confident Led Zeppelin were one of the best bands in the world in their heyday and is glad they haven't reformed again because it meant their reunion gig was all the more special.

He told the Guardian newspaper: ''There was a Zeppelin swagger, definitely. We knew we were good. At our best, we thought we could be a match for any band on the planet. And at our worst, we were better than most of them.

''Because we haven't gone out and flogged it, there's an anticipation and a memory of it being clean and pure and not part of some sort of threshing middle-aged circus, which I think is very much to our credit.

''If we'd been part of the merry go round year and year, or every two years, I think it might have damaged everything.''