Alice Cooper's energy has never been in question, as evidenced by his current headlining tour with Marilyn Manson. Although he's rocking in the present, Cooper still has a foot in yesteryear, as he's working on a cover album that centers on early to mid '70s tunes.

In an interview with Billboard, Cooper said the project covers a time period of "the Hollywood vampires," in which musicians such as John Lennon, Keith Moon, Ringo Starr and T. Rex's Marc Bolan partied to their hearts content. Bob Ezrin, the producer of several Cooper albums from that era as well as the 2011 Cooper effort 'Welcome 2 My Nightmare,' is once again collaborating with the rocker.

"We're really happy, all of us, everyone involved in the covers because it's pretty much what we wanted to do," said Cooper, who plans to release the album next spring. "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."

Cooper is also buzzing about his recent co-headlining collaboration with Marilyn Manson, and he only has kind words for his fellow make-up wearing brother-in-arms. "I think we made converts of his audience, and there was an older audience that came that was suspect of him but liked him," he added. "So both of us benefited from this tour -- the elder myth and the new myth. It really did work, and I'm sure we'll do it again."

Now out on the road for his own tour, Cooper is previewing several songs that will be featured on his yet to be named collection, including the Doors' 'Break on Through (to the Other Side),' the Beatles' 'Revolution,' the Jimi Hendrix Experience's 'Foxy Lady,' and the Who's 'My Generation.'