Los Angeles: American musician Alice Cooper says controversial pop star Kesha is probably the devil.

The 63-year-old rocker, real name Vincent Furnier, was initially reluctant to include a female singer on a track for his 'Welcome 2 My Nightmare' album, until he realised it would be exactly the sort of person his alter ego would dislike the most, reported website.

"I thought, if it was Alice's nightmare and he was going to meet up with the devil, who would be the one person that he would rather not have to deal with? A pop diva. And I called up Kesha, and she said she would love to do it.

"Of course, I did this not realising at the time that she probably is the devil," Cooper said.
The 'Tik Tok' hitmaker, Kesha has proved controversial because of her racy lyrics about partying and getting drunk, causing concerned parents to protest against her, starting facebook groups such as 'Kesha - You are a Bad Influence'.

Meanwhile, Cooper's stage show sees plenty of theatrics and usually climaxes with him staging having his head cut off by guillotine, although he says it doesn't always work out.

 "You can almost expect to have a few 'Spinal Tap' moments where everything goes wrong.

"And if that happens, the audience really gets a great kick out of it, because they know that wasn't supposed to happen. So they're in on the joke. And I kind of like that.

But 99 per cent of the time, the show works the way it's supposed to," he said.