The American singer said that her new track 'Supernatural' was inspired by an erotic paranormal experience.
"It's about experiences with the supernatural... but in a sexy way," she told Ryan Seacrest on his KIIS FM radio show.
"I had a couple of experiences with the supernatural. I don't know his name! He was a ghost! I'm very open to it."
Ke$ha added that her new album Warrior was based around a spiritual quest she went on to improve her music.
"The theme of this record is magic. I went on a spirit journey by myself," she said. "No security guard. No managers. I just went around the world and lived on a boat.
"I was in Africa rehabilitating baby lions. I went diving with great white sharks, and just went on this crazy spirit quest.
"I got hypnotised, and I just really wanted this record to be really positive, really raw, really vulnerable and about the magic of life."
Warrior will debut in the UK on December 3 and a day later in the US.
Watch Ke$ha sing her new track 'Die Young' on the Tokyo subway below: