*''[[The Fragile: Deviations 1]]''
*''[[We're In This Together (halo)|We're In This Together]]''
*''[[And All That Could Have Been (halo)|And All That Could Have Been]]'' (CD/DVD {; Easter egg on the DVD})
*''[[Still]]''
===Other===
*Both the single and quiet versions became available via streaming links on [[nin.com ]] the preceding day to ''Halo 13'' release date. (The RealMedia versions are still available: [http://play.rbn.com/?url=mediapubs/mediapubs/g2demand/awwtdt.smi&proto=rtsp TDTWWA]|[http://play.rbn.com/?url=mediapubs/mediapubs/g2demand/awwtdtq.smi&proto=rtsp TDTWWAQ])
*The song was used in the trailer for ''Terminator: Salvation,'' released in 2009. It can be viewed [https://www.youtube.com/watch?v=gn0h9oLl59I here].
==Versions==
===The Day The World Went Away===
This is the original album version, found on ''The Fragile.'' It follows the percussive and aggressive "[[Somewhat Damaged]]," and is one of NIN[[Nine Inch Nails]]'s most uniquely structured songs. Musically the opposite of "Somewhat Damaged" in almost every way, it lacks the use of any standard form of percussion, and begins with drones that fade in during the ending of "Somewhat Damaged." These soon give way to loud, distorted guitars and bass playing a simple five-chord progression. As it repeats, a synthesizer melody enters on top, ascending in intensity and pitch until it drops out along with the guitars. The bass continues playing the progression above the drones while Reznor sings the song's verse, backed with a distant harmony for the second half. The song features the use of a mandolin in this section, another first for NIN, and it is the mandolin alone that strums a bridge from the end of the verse and into the final section, characterized by a return of the loud guitar and bass playing a new progression, joined by group vocals singing a wordless melody. This all gives way at the end of the phrase to a quiet percussive sound that ends the song, repeating while fading out into the opening soundscape layers of "[[The Frail]]."
The song's introductory guitar chords are extended by roughly 30 seconds on ''The Fragile'' vinyl version.
[[Image:Fragile_diary_071099_SD2_TDTWWAvid.jpg|thumb|Journal entry from ''The Fragile'' sessions in 1999 published on nin.com mentioning the unused music video for "The Day The World Went Away".]]
This song is among the many Nine Inch Nails songs that have had a [[Nine Inch Nails music videos|music video ]] scrapped. The video, which was partially finished, apparently showed images of a funeral. Parts of the video appeared as an Easter Egg on the DVD version of ''And All That Could Have Been.''
The footage contains black-and-white shots of Reznor in a forest, and color images of a black kingsnake slithering in sand. It also includes Reznor standing in a room with his back to the camera and shows flowers, as well as a feather floating in the air. Right before it cuts to the black-and-white footage of Reznor, for a split second, it shows a man (most likely Reznor) hovering in the air in a red room. Right in front of him is a bright light that instantly brightens, making the screen white for the black-and-white footage to come in. The second half of the video contains live performance footage of the band.