Alice Cooper is friends with his musical heroes.

The 66-year-old rocker was lucky enough to meet many of his idols, from Frank Sinatra to John Lennon, over the course of his career and has always found that the bigger the star, the nicer they are.

He told ''I did become good friends with the Beatles, and I became friends with the Stones and Bob Dylan and Elvis and Sinatra. Those guys were guys that we met and we actually got along good. I always thought that the bigger the star, the nicer they were. There was no really mega star that wasn't really nice. And what that said to me was that when you become that big, you don't have to prove anything.

''You've already reached that point. You couldn't find a nicer guy than Frank Sinatra. He was very, very nice. And same with Elvis. And same with the Beatles. Paul McCartney is the nicest guy in the world, you know. Same with John Lennon. It was great to know that your heroes were actually heroes.''

The 'I'm Eighteen' hitmaker, who is the subject of new documentary, 'Super Duper Alice Cooper', was at the centre of several controversies during his heyday - including killing chickens live on stage and being part of the Hollywood Vampires club - but he says most stories were grossly exaggerated.

Alice explained: ''Back then, there was no internet. There was no immediate information, everything was based on urban legend. So people would get these stories in England about us, they were so overblown, and so ridiculous, that the MPs and the government would go 'Oh, well we're not going to have them here'.

''And then there'd see the real story, that this is a show, this is this, and this is how it goes, and they had to let us in.''