Oh, were getting real obscure here. In 2005, at the height of remix mania, Britney released her first album dedicated solely to reworked older material. With one exception And Then We Kiss, an unreleased track, that nonetheless proved worthy enough to be placed alongside her biggest hits. Only Britney could get away with remixing a song when nobody had even heard the original, but the songs euro-trance vibe and slower tempo makes it worthy of the second look.