Steven Tyler `fell off stage while high on drugs`

The American Idol judge admitted that he had been 'snorting' Lunesta, which is prescribed for insomnia, when he plunged off the stage in August 2009. He ended up so badly broken that the rest of the Aerosmith tour had to be cancelled.

Appearing on The Late Show with David Letterman, he said, 'I zigged when I should have zagged.

'It's not any news here about my drug use and addictions in the past. A couple years ago, you know, I was doing Lunesta because I had some problems with my feet.

'When I was snorting that I fell off the stage. It shows you what kind of drug addict I was.

'I was looking for any excuse to get high. I should've been using my band because the band is the strongest drug I've ever had in my body and to be a part of.?

'When the curtain goes up and there's 80,000 people out there, it's the biggest rush in the world. Therefore, I have to chase other things. Not anymore.'

The 62-year-old rocker checked into rehab just four months after the fall and was treated for an addiction to prescription painkillers.