According to European copyright law, any recording that sits unreleased for 50 years loses its copyright. In recent years, this policy has forced Bob Dylan, the Beatles, Pink Floyd and many others to release massive sets containing everything in their vaults from certain years, even if it's multiple takes of a single tune or a dodgy-sounding bootleg concert recording. Some of these sets, like Bob Dylan's The Cutting Edge 1965–1966, generate a lot of press, though others are deliberately under-the-radar. Pink Floyd's 1965 (Their First Recordings) was limited to 1,050 vinyl copies. The Beatles Bootleg Recordings 1963 came out via the iTunes store for just a few hours, but that brief window was enough to protect the copyright. Here's a look at 10 other sets that will have to see release in the coming years, even if they're limited to 16 8-track tapes available only in Paraguay or on four MiniDiscs sold at a Target in Saskatoon.