Changes

*Down In It - appears on [[Purest Feeling]] as the last track, differing from its offical counterparts as that it has an extended intro with strange screams and odd static. It also includes about 1 minute and 8 seconds of distorted clippings of the song at the end as a finish to the album. Musically it's extremely close to the (Demo) version from the [[Head Like A a Hole (halo)|Head Like A Hole]] US single.

*Down In It (Demo) - appears on [[Head Like A a Hole (halo)|Head Like A Hole]] (US) as the last track, it's extremely similar to the [[Purest Feeling]] version, except that it lacks the long intro and all the extra layering of it's Purest Feeling counterpart as well as the distorted outro. Most likely it's the definitive "original version" of Trent Reznor's very first song as Nine Inch Nails.

*Down In It (Demo III) - appears on the [[Purest Feeling II]] bootleg. Almost exactly the same as the Purest Feeling version, simply lacking the extra layering and sound effects as well as the distorted outtro, though it does retain the extended drumbeat intro and is probably the version the Purest Feeling version was based upon

*Down In It (Demo IV) - appears on the [[Purest Feeling II]] bootleg. It's an odd version with Trent whispering a good portion of his vocals an odd beat set compared to the others. It also includes faux-Oriental sounding synths which are noticably absent in any of the other versions of the song

*Down In It (Shred) - a mix that appears on both the [[Down In It (halo)|Down In It]] and [[Head Like A Hole {halo}|Head Like A Hole]] singles. It's basically retains the original song with an extended intro and a long instrumental area that makes up the entire latter half of the song, considered the "extended single version" of the song by some.

*Down In It (Singe) - a mix that appears on both the [[Down In It (halo)|Down In It]] and [[Head Like A Hole {halo}|Head Like A Hole]] singles. It's a mostly instrumental "dub" mix of the song with minimal vocals and strange warping and mixing of the beats with heavy bass emphasis. It should be noted that this mix is actually 18 seconds longer on the Head Like A Hole (US) single than it was on the Down In It single. The reason for this is unknown, though it's probably due to the time constraints imposed on Vinyl singles compared to a full sized LP Maxi Single.