Band: Nine Inch Nails Song: 34 Ghosts IV Release Year: 2008 Why?: Ghosts I-IV was such an intriguing album idea to me, where Trent Reznor just decided after making this almost purely instrumental album that he would just dump it online one day with basically no notice. I picked it up for $5 bucks the day it released thanks to social media going crazy about it dropping suddenly, without any of the mess and fuss of a normal album purchase. Songs on the album were identified only by their track number and what section it was, from I to IV, and still, this track is probably the most widely known/recognized of them all. It is beautiful.