Pink Floyd Says Reissue Project Will Have 'Complete Survey' of Its .

Pink Floyd's Nick Mason says a "mellowing with old age" brought he and surviving bandmates David Gilmour and Roger Waters around to the mind of a deluxe catalog overhaul that begins in September.

"It is a sea change from our level of view," Mason tells Billboard.com. "We'd never put much thought into the theme of releasing incomplete or earlier versions of things, but I consider the world has changed.

One now looks at these things and realizes there actually is worry and how things came nigh and what the other versions were and so on. We thought rather than just leave everything in the vaults, it might be worth bringing everything out and liberal people a perfect survey of what we've done."

Pink Floyd Ends Legal Dispute, Signs with EMI

The campaign kicks off Sept. 26 with digitally remastered versions of Pink Floyd's 14 studio albums as good as "The Dark Side of the Moon" in a two-disc "Experience" and a six-disc "Immersion" treatment, featuring previously unreleased live material, demos and outtakes. Similarly expanded versions of "Wish You Were Here" as good as the compilation "A Foundation in the Door - The Best of Pink Floyd" are due Nov. 7, with "The Wall" given the "See" and "Immersion" treatments on Feb. 27.

And, Mason says, that won't be the end of the campaign. "We will do some more form of in-depth versions of other albums, but I don't love what we've got in the line for that, yet." he promises. But later all this, Mason adds, the vaults "are pretty bare. Frankly, I'd be embarrassed if we always get out with another translation of 'Dark Side.' "

Mason says he, Waters and Gilmour generally left the vault-mining and technological work to longtime engineers James Guthrie and Andy Jackson, who would "do some study and place it to us all at the same time. Initially the box would come and I'd think, 'Oh, God, it's another variation of something' and give it for a pair of days. Then, when you do eventually turn it, it's actually quite an eye-opener. You see things you totally forgot you've always done. In one or two cases you question why on Earth you went with the variant that ended up on the book rather than this early take."

The clearest example of that, Mason says, is a transcription of "Care You Were Here" that features a violin part by French great Stephane Grappelli. "When I heard that for the 1st time, I couldn't for the lifetime of me see why we never put that on show in the foremost place," Mason says. "I felt like, 'This is great! Why didn't we use this?!' "

Mason says that preparing and promoting the Pink Floyd campaign has becoming something of "a full-time job for him," though he plans to do some auto racing this summer. On May 12, meanwhile, Mason joined Gilmour as special guests for Waters' performance of "The Wall" at London's O2 Arena - which he says was "terrific." Ever since, of course, he's being asked some further reunion plans, which he does not necessarily discount.

"There are no plans now," Mason says. "The farseeing and light of it is, I go in hope. I'd love to really do something together again. All of us are exposed to invitations to do things; the only thing that would take it would be some feel that.there's some particularly good cause to do it together rather than separately. Perhaps we're acquiring a bit older and more appreciative of just how often it can think to our fanbase to see us together. I guess we simply have to look and see."