The song was released to radio stations simultaneously around 2:30pm EST on April 22, 2008, being mastered only the day before, and was then made available as a free download via the official Nine Inch Nails website. When downloaded, it comes with track art and a note found in the comments box of the song info saying "Go to www.nin.com on May 5," possibly confirming rumors of a new EP. It is possible that each square on the cover represents a track of the ep. The lyrics are also contained.
"Discipline" is the first radio single from NIN since becoming an independent recording act, following their final release under a major record label, 2007's Y34RZ3R0R3M1X3D. Due to the advertisement and short notice of the release, the song was posted on YouTube almost immediately after release.
When downloading the song from discipline.nin.com, the process involves submitting an email address and a zip/postal code, opening the email and clicking the download link, then putting the token code into the website after clicking the link. A .zip file is automatically downloaded once the token and link have registered. In addition, the multitrack files can be found at remix.nin.com.
Discipline (MP3 download version)
The original download version is 4:29 in length and fades out at the end.
Discipline (Album version)
The version on The Slip is 4:19 and starts to fade out at the end, but then abruptly cuts off as it segues into Echoplex.
Am I still tough enough? Feels like I’m wearing down Is my viciousness Losing ground? Am I taking too much Did I cross a line I need my role in this Very clearly defined I need your discipline I need your help I need your discipline You know once I start I cannot help myself And now it's starting up feels like I'm losing touch Nothing matters to me Nothing matters as much I see you left a mark Up and down my skin I don't know where I end And where you begin I need your discipline I need your help I need your discipline You know once I start I cannot help myself Once I start I cannot stop myself