Alice Cooper recently revealed plans to record an album of covers for release next year, and now the rocker says he’s "three-quarters of the way through" the project.

"We're really happy, all of us, everyone involved in the covers because it's pretty much what we wanted to do," Cooper tells Billboard.

"We specified a certain time period and said, 'Let's stay within that. Let's not move it around too much.' We don't want to be doing cover songs from the 80s and 90s when the Hollywood vampires kind of thing was more '73, '74, '75."

Alice’s reference to "the time period of the Hollywood vampires" recalls the hard-partying crew of the early- and mid-70s that included the likes of John Lennon, the Who's Keith Moon, Harry Nilsson, Ringo Starr and "honorary" guests such as T. Rex's Marc Bolan and Keith Allison of Paul Revere & the Raiders.

The set will also include Sunset Strip forebears such as the Doors and Jimi Hendrix.

Bob Ezrin, who produced several of Cooper's 70s best-sellers as well as 2011's 'Welcome 2 My Nightmare,' is working on the set.

Currently on a headlining tour after spending June on the road with Marilyn Manson, Cooper and his band are previewing four of the covers in concert -- the Doors' 'Break On Through (to the Other Side),' the Beatles' "Revolution," the Jimi Hendrix Experience's "Foxy Lady," a showpiece for guitarist Orianthi, and the Who's "My Generation."

He's keeping the rest of the song list under wraps for now, however.

"We have September off, so we'll probably take that time and just finish it," Cooper notes. "I think we could finish the whole thing in September and it'll be out, I would say, by early spring."

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