High Quality Content by WIKIPEDIA articles! "Discipline" is a single by American industrial rock act Nine Inch Nails. It is the band`s first single since the severing its ties with Interscope Records and publishing music independently. Unlike previous NIN singles, no physical release of the song was issued. The song was first released to radio stations on April 22, 2008, sent by Nine Inch Nails frontman Trent Reznor.