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'''''Lights In The Sky''''' is a promotional album promoting [[Nine Inch Nails|Nine Inch Nails']] [[Performance 2008|2008 American tour]], featuring a track from each supporting artist, plus one track from ''[[The Slip]]''. The album was released for free for download from [[lightsinthesky.nin.com ]] on the 5th of June 2008, and the download was accompanied with album art, web graphics, wallpapers and a prinatable tour poster. It is numbered Seed 5, continuing the sister system to the [[Halo Numbersnumbers]] for promotional material.