==D==
===Day The World Went Away, The===
*'''''[[The Day The World Went Away (halo)|Release]]:''''' Also known as '''[[Glossary#Halo|Halo]]''' 13.*'''''[[The Day The World Went Away (song)|Song]]:''''' The second track on left disc of '''''[[The Fragile (halo)|The Fragile]]'''''. Versions of this track also appear on '''''[[The Day The World Went Away (halo)|The Day The World Went Away]]''''' and '''''[[Still]]'''''.
==="[[Dead Souls]]"===A [http://en.wikipedia.org/wiki/Joy_Division Joy Division] cover recorded for '''''[http://en.wikipedia.org/wiki/The_Crow_%28album%29 The Crow Soundtrack].''''' It was later added as the fifth track on Disk 2 of the deluxe reissue of '''''[[The Downward Spiral (halo)|The Downward Spiral "Deluxe Edition"]].'''''
==="[[Deep]]"===
The second track off of the '''''[http://en.wikipedia.org/wiki/Lara_Croft:_Tomb_Raider Lara Croft: Tomb Raider]''''' Soundtrack performed by '''[[NIN]].''' This track currently does not appear on any '''[[Glossary#Halo|Halos]].'''
===[[Demon Seed]]===
The tenth track on '''''[[The Slip]]'''''. No other versions of this song appear on any halos.
==="Der Kommissar"===
A [http://en.wikipedia.org/wiki/Falco_%28musician%29 Falco] cover covered by '''[[Trent Reznor]]''' when he was with '''[[Option 30]]'''.
==="Dig It"===
The '''[[Skinny Puppy]]''' song that supposedly inspired '''"[[Down In It (song)|Down In It]]."'''
===[[Discipline]]===
The fourth track on '''''[[The Slip]]'''''. A version of this song appears on the bonus DVD of the physical edition of '''''[[The Slip]]'''''.
===[[Dissonance]]===
The name given to '''[[NIN|NIN's]]''' set when playing during the [http://www.teenagewildlife.com/info/tours/o95/ Outside Tour] with '''[[David Bowie]]''' in 1995.
===''"Down In It"''===*'''''[[Down In It (halo)|Release]]:''''' Also known as '''[[Glossary#Halo|Halo 1]]'''*'''"[[Down In It (song)|Song]]:"''' The third track off of '''''[[Pretty Hate Machine]].''''' Versions of this track also appear on '''''[[Down In It (halo)|Down In It]],''''' '''''[[Head Like A Hole (halo)|Head Like A Hole]],''''' '''''[[Closure]],''''' and '''''[[Purest Feeling (halo)|Purest Feeling]].'''''
===Downward Spiral, The===
*'''''[[The Downward Spiral (halo)|Release]]:''''' Also known as '''[[Glossary#Halo|Halo]]''' 8. This is the third studio album released by '''[[NIN]]'''.*'''''[[The Downward Spiral (song)|Song]]:''''' The thirteenth track on the album '''''[[The Downward Spiral (halo)|The Downward Spiral]]'''''. A remix of this song appears on '''''[[Further Down The Spiral]]''''' as well as disc 2 of the deluxe reissue of '''''[[The Downward Spiral (halo)|The Downward Spiral]]'''''.
==E==