Great album covers

Vinyl has survived the onslaught of CDs and MP3s to still reign supreme as the serious music collector's favorite format. Of course, part of the allure of a vinyl album isn't just the sound -- it's the album's artwork itself, as seen on these 27 great album covers. CNN's "Soundtracks: Songs that Defined History" airs Thursdays at 10 p.m. ET/PT.