In addition to dozens of unheard studio tracks and live recordings, all CD releases are equipped with extended booklets featuring rare photos and, single covers, backstage passes and additional liner notes, while five of the eight albums include a DVD with live concert footage, TV performances and interviews from the period.

The remastered LP formats are released on 180-gram vinyl in a sleeve replicating the first pressing. They also come with an audio CD, featuring the original track listing and the same bonus audio as the CD formats. A limited and numbered Deluxe Box Set will contain all remastered vinyl discs.

"It's hard to summarize 50 years in words," says the Scorpions, "but listening back to all those songs - many of them previously unreleased - recorded in one of our most creative periods, really took us back in time.

"This was a very heartfelt project for all of us. It brought back great memories whilst we rediscovered our musical DNA by listening to the archives, selecting dozens of unreleased songs and early versions of well-known Scorpions anthems.