More details are emerging on the Scorpions' 50th anniversary studio album, which is due in 2015. The band will be returning to leftover material, some from its most celebrated era, and adding electric versions of previously released unplugged tracks.

"We have 12 songs," guitarist Matthias Jabs tells GuitarWorld. "We found songs mainly from the early-'80s 'Blackout' and 'Love At First Sting' days, when many people consider our most creative and best time. The leftover tracks sound good, but they were never finished. They don't have lyrics or vocals, and they're not recorded to a click. So we have to do everything new. But it sounds quite good so far."

'Dancing with the Moonlight' and 'Rock and Roll Band,' both included as bonus tracks on 2013's 'MTV Unplugged: Live in Athens,' will also be updated. "So, we have those two songs, which are great, and we'll put them out as an electric version," fellow guitarist Rudolf Schenker added.

The Scorpions mounted a three-year farewell tour through 2012 before changing their minds. Frontman Klaus Meine, in fact, says the offer from MTV helped spur the group to reconsider. They are now slated for a 50th anniversary tour next year, as well.