
The track was sent before the remainder of the album was completed, and less than 24 hours after the track had been mastered by Alan Moulder. After the release of Ghosts I–IV, Reznor began writing and recording what would become the next full-length album, The Slip.ĭuring recording sessions for The Slip, Reznor sent the track "Discipline" to radio stations himself on April 22. Since the announcement, Nine Inch Nails released the 36-track instrumental album Ghosts I–IV in March 2008 on Reznor's independent label The Null Corporation. Reznor also revealed that Nine Inch Nails would likely distribute music independently.

Nine Inch Nails front man Trent Reznor announced in 2007 that the band had completed its contractual obligations to its record label, Interscope Records, and would no longer be working with the company.
